Title : Out of time ordered effective dynamics of a Brownian particle

\nAbstract : In this talk I will present the out of time ordered dynamics of a Brownian particle interacting with a thermal bath. To illustrate the features of this effective dynamics\, I will describe a simple toy model where the bath comprises of two sets of harmonic oscillators coupled nonli nearly to the Brownian particle. Beginning with a Schwinger-Keldysh effect ive action of the particle\, I will demonstrate its duality with a stochas tic theory governed by a non-linear Langevin equation. This Langevin dynam ics or the equivalent Schwinger-Keldysh effective theory is\, however\, i nadequate for determining the Out-of-Time-Order Correlators (OTOCs) of the particle.This limitation can be overcome by extending the particle’s effe ctive theory to a path integral formalism defined on a contour with multip le time-folds. This extension introduces some new effective couplings whic h are determined by the bath’s OTOCs. The couplings in this OTO effective theory satisfy some constraints due to microscopic reversibility and therm ality of the bath. I will show that\, from the point of view of the Langev in dynamics\, these constraints lead to a generalised fluctuation-dissipat ion relation between a non-Gaussianity in the noise distribution and a the rmal jitter in the particle’s damping coefficient.

\n END:VEVENT BEGIN:VEVENT UID:5lohfit82pof26bdm2p7ak5s03@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: “Integrability from Confinement”\nAbstract: \nI will arg ue that high energy dynamics on the worldsheet of confining strings is int egrable and illustrate this point using two examples.\nThe first is a pur e Yang—Mills theory in two spatial dimensions. There this logic allows one to obtain a prediction for quantum numbers\nof all glueballs. I will pre sent results of a dedicated lattice simulation which confirm this predicti on. The second example is an adjoint QCD in one spatial dimension.\nThere this logic leads to a “zigzag model”—a remarkably simple novel integrable relativistic $N$-body system. I will prove the Liouville integrability\no f the zigzag model by presenting an explicit construction of the correspon ding conserved charges.\nThis model describes the $N$-particle subsector o f a $Tbar{T}$-deformed massless fermion and\nsuggests a natural setting fo r constructing off-shell observables in $Tbar{T}$-deformed theories. DTSTART;TZID=Asia/Jerusalem:20191022T120000 DTEND;TZID=Asia/Jerusalem:20191022T130000 SEQUENCE:0 SUMMARY:Sergei Dubovsky URL:https://phsites.technion.ac.il/strings/event/sergei-dubovsky/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: “Integ rability from Confinement”

\nAbstract:

\nI will argue that hi
gh energy dynamics on the worldsheet of confining strings is integrable an
d illustrate this point using two examples.

\nThe first is a pure Ya
ng—Mills theory in two spatial dimensions. There this logic allows one to
obtain a prediction for quantum numbers

\nof all glueballs. I will p
resent results of a dedicated lattice simulation which confirm this predic
tion. The second example is an adjoint QCD in one spatial dimension.

\nThere this logic leads to a “zigzag model”—a remarkably simple novel in
tegrable relativistic $N$-body system. I will prove the Liouville integrab
ility

\nof the zigzag model by presenting an explicit construction of
the corresponding conserved charges.

\nThis model describes the $N$-
particle subsector of a $Tbar{T}$-deformed massless fermion and

\nsug
gests a natural setting for constructing off-shell observables in $Tbar{T
}$-deformed theories.

“Holographic order from modular chaos”

\n END:VEVENT BEGIN:VEVENT UID:0dnlieuv5nge6mpkppdkibq9e7@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Generalised Riemann Hypothesis\, Random Time Series and Normal Distributions\nAbstract: L functions based on Dirichlet characters are natural generalizations of the Riemann zeta function: they both have s eries representations and satisfy an Euler product representation\, i.e. a n infinite product taken over prime numbers. We address the Generalized R iemann Hypothesis relative to the non-trivial complex zeros of the Dirichl et L functions by studying the possibility to enlarge the original domain of convergence of their Euler product. This leads us to analyse the asympt otic behaviour of particular series on primes: although deterministic\, th ese series have pronounced stochastic features which make them analogous t o random time series. For non-principal characters\, we show that\, in vie w of the Dirichlet theorem on the equidistribution of reduced residue clas ses modulo q and the Lemke Oliver-Soundararajan result on the distribution of pairs of residues on consecutive primes\, these series present a unive rsal diffusive random walk behavior with critical exponent ½. DTSTART;TZID=Asia/Jerusalem:20191105T120000 DTEND;TZID=Asia/Jerusalem:20191105T130000 SEQUENCE:0 SUMMARY:Giuseppe Mussardo (SISSA) URL:https://phsites.technion.ac.il/strings/event/giuseppe-mussardo/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: Genera lised Riemann Hypothesis\, Random Time Series and Normal Distributions

\nAbstract: L functions based on Dirichlet characters are natural gener alizations of the Riemann zeta function: they both have series representat ions and satisfy an Euler product representation\, i.e. an infinite produc t taken over prime numbers. We address the Generalized Riemann Hypothesis relative to the non-trivial complex zeros of the Dirichlet L functions by studying the possibility to enlarge the original domain of convergence of their Euler product. This leads us to analyse the asymptotic behaviour of particular series on primes: although deterministic\, these series have p ronounced stochastic features which make them analogous to random time ser ies. For non-principal characters\, we show that\, in view of the Dirichle t theorem on the equidistribution of reduced residue classes modulo q and the Lemke Oliver-Soundararajan result on the distribution of pairs of resi dues on consecutive primes\, these series present a universal diffusive ra ndom walk behavior with critical exponent ½.

\n END:VEVENT BEGIN:VEVENT UID:198ecp78gsslrm9jmi1ttamt2s@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20191110T143000 DTEND;TZID=Asia/Jerusalem:20191110T153000 SEQUENCE:0 SUMMARY:Evyatar Sabag URL:https://phsites.technion.ac.il/strings/event/evyatar-sabag/ END:VEVENT BEGIN:VEVENT UID:50cs29qr6vkt0gftto13orpqro@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20191117T143000 DTEND;TZID=Asia/Jerusalem:20191117T153000 SEQUENCE:0 SUMMARY:Anton Nedelin URL:https://phsites.technion.ac.il/strings/event/anton-nedelin-2/ END:VEVENT BEGIN:VEVENT UID:1o8qrt3ne0e781pgpuv2jjfqbg@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20191124T143000 DTEND;TZID=Asia/Jerusalem:20191124T153000 SEQUENCE:0 SUMMARY:Orr Sela URL:https://phsites.technion.ac.il/strings/event/orr-sela/ END:VEVENT BEGIN:VEVENT UID:3tikhba10rt873k46c9q7aug78@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:title: N=1 conformal dualities\nabstract: We consider on one ha nd the possibility that a supersymmetric N = 1 conformal gauge theory has a strongly coupled locus on the conformal manifold at which a different\, dual\, conformal gauge theory becomes a good weakly coupled description. O n the other hand we discuss the possibility that strongly coupled theories \, e.g. SCFTs in class S\, having exactly marginal N = 1 deformations admi t a weakly coupled gauge theory description on some locus of the conformal manifold. We present a simple algorithm to search for such dualities and discuss several concrete examples. In particular we find conformal duals f or N = 1 SQCD models with G2 gauge group and a model with SU(4) gauge grou p in terms of simple quiver gauge theories. We also find conformal weakly coupled quiver theory duals for a variety of class S theories: T4\, R0\,4\ , R2\,5\, and rank 2n Minahan-Nemeschansky E6 theories. Finally we derive conformal Lagrangians for four dimensional theories obtained by compactify ing the E-string on genus g > 1 surface with zero flux. The pairs of dual Lagrangians at the weakly coupled loci have different symmetries which are broken on a general point of the conformal manifold. We match the dimensi ons of the conformal manifolds\, symmetries on the generic locus of the co nformal manifold\, anomalies\, and supersymmetric indices. The simplicity of the procedure suggests that such dualities are ubiquitous. DTSTART;TZID=Asia/Jerusalem:20191126T103000 DTEND;TZID=Asia/Jerusalem:20191126T113000 SEQUENCE:0 SUMMARY:Shlomo Razamat URL:https://phsites.technion.ac.il/strings/event/shlomo-razamat-5/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\ntitle: N=1 co nformal dualities

\nabstract: We consider on one hand the possibilit y that a supersymmetric N = 1 conformal gauge theory has a strongly couple d locus on the conformal manifold at which a different\, dual\, conformal gauge theory becomes a good weakly coupled description. On the other hand we discuss the possibility that strongly coupled theories\, e.g. SCFTs in class S\, having exactly marginal N = 1 deformations admit a weakly couple d gauge theory description on some locus of the conformal manifold. We pre sent a simple algorithm to search for such dualities and discuss several c oncrete examples. In particular we find conformal duals for N = 1 SQCD mod els with G2 gauge group and a model with SU(4) gauge group in terms of sim ple quiver gauge theories. We also find conformal weakly coupled quiver th eory duals for a variety of class S theories: T4\, R0\,4\, R2\,5\, and ran k 2n Minahan-Nemeschansky E6 theories. Finally we derive conformal Lagrang ians for four dimensional theories obtained by compactifying the E-string on genus g > 1 surface with zero flux. The pairs of dual Lagrangians at th e weakly coupled loci have different symmetries which are broken on a gene ral point of the conformal manifold. We match the dimensions of the confor mal manifolds\, symmetries on the generic locus of the conformal manifold\ , anomalies\, and supersymmetric indices. The simplicity of the procedure suggests that such dualities are ubiquitous.

\n END:VEVENT BEGIN:VEVENT UID:01issq4ups20e2mho9vm6anu6t@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Integrability and Renormalization under TT¯\nAbstract: S mirnov and Zamolodchikov recently introduced a new class of two-dimensiona l quantum field theories\, defined through a differential change of any ex isting theory by the determinant of the stress-tensor. From this TT¯ flow equation one can find a simple expression for both the energy spectrum and the S-matrix of the TT¯ deformed theories. Our goal is to find the renorm alized Lagrangian of the TT¯ deformed theories. In the context of the TT¯ deformation of an integrable theory\, the deformed theory is also integrab le and\, correspondingly\, the S-matrix factorizes into two-to-two S-matri ces. One may thus hope to be able to extract the renormalized Lagrangian f rom the S-matrix. We do this explicitly for the TT¯ deformation of a free massive scalar\, to second order in the deformation parameter. Once one ha s the renormalized Lagrangian one can\, in principle\, compute all other o bservables\, such as correlation functions. We briefly discuss this\, as w ell as the relation between the renormalized Lagrangian\, the TT¯ flow equ ation\, and the S-matrix. DTSTART;TZID=Asia/Jerusalem:20191126T120000 DTEND;TZID=Asia/Jerusalem:20191126T130000 SEQUENCE:0 SUMMARY:Vladimir Rosenhaus (IAS) URL:https://phsites.technion.ac.il/strings/event/vladimir-rosenhaus-ias-2/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: Integr ability and Renormalization under TT¯

\nAbstract: Smirnov and Zamolo dchikov recently introduced a new class of two-dimensional quantum field t heories\, defined through a differential change of any existing theory by the determinant of the stress-tensor. From this TT¯ flow equation one can find a simple expression for both the energy spectrum and the S-matrix of the TT¯ deformed theories. Our goal is to find the renormalized Lagrangian of the TT¯ deformed theories. In the context of the TT¯ deformation of an integrable theory\, the deformed theory is also integrable and\, correspo ndingly\, the S-matrix factorizes into two-to-two S-matrices. One may thus hope to be able to extract the renormalized Lagrangian from the S-matrix. We do this explicitly for the TT¯ deformation of a free massive scalar\, to second order in the deformation parameter. Once one has the renormalize d Lagrangian one can\, in principle\, compute all other observables\, such as correlation functions. We briefly discuss this\, as well as the relati on between the renormalized Lagrangian\, the TT¯ flow equation\, and the S -matrix.

\n END:VEVENT BEGIN:VEVENT UID:03q6m5bd1dpgm87asugkv7d9gu@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20191201T143000 DTEND;TZID=Asia/Jerusalem:20191201T153000 SEQUENCE:0 SUMMARY:Nele Callebaut URL:https://phsites.technion.ac.il/strings/event/nele-callebaut/ END:VEVENT BEGIN:VEVENT UID:0k925r4bs4veatq4bnbs2l3aqe@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20191208T143000 DTEND;TZID=Asia/Jerusalem:20191208T153000 SEQUENCE:0 SUMMARY:Paolo Milan URL:https://phsites.technion.ac.il/strings/event/paolo-milan/ END:VEVENT BEGIN:VEVENT UID:64ngu1ja3huv6c98bm3594421n@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: TTbar-deformed CFT as a non-critical string\nAbstract: \nI will present a non-critical world-sheet string theory action as a prop osed description of the TTbar deformation of a 2D CFT with general central charge. This talk will be based on 1910.13578. DTSTART;TZID=Asia/Jerusalem:20191210T103000 DTEND;TZID=Asia/Jerusalem:20191210T113000 SEQUENCE:0 SUMMARY:Nele Callebaut URL:https://phsites.technion.ac.il/strings/event/nele-callebaut-2/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: TTbar- deformed CFT as a non-critical string

\nAbstract:

\nI will pr esent a non-critical world-sheet string theory action as a proposed descri ption of the TTbar deformation of a 2D CFT with general central charge. Th is talk will be based on 1910.13578.

\n END:VEVENT BEGIN:VEVENT UID:3fm5rkqtvcfj35ddg3m8f6ek2j@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Vector model in higher dimension\nAbstract: I will expla in why we study UV behaviour of the O(N) vector\nmodel with quartic intera ction in 4 < d < 6 dimensions and present a\nnumber of calculations relate d to the CFT data of the model at the UV\nfixed point. DTSTART;TZID=Asia/Jerusalem:20191210T120000 DTEND;TZID=Asia/Jerusalem:20191210T130000 SEQUENCE:0 SUMMARY:Misha Smolkin URL:https://phsites.technion.ac.il/strings/event/misha-smolkin/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: Vector model in higher dimension

\nAbstract: I will explain why we study U
V behaviour of the O(N) vector

\nmodel with quartic interaction in 4
< d < 6 dimensions and present a

\nnumber of calculations related to
the CFT data of the model at the UV

\nfixed point.

Title: From S cattering Amplitudes to Gravitational Waves

\nAbstract: The remarkab
le detection of gravitational waves by the LIGO/Virgo

\ncollaboratio
n has opened a new window into the cosmos. In this

\ncolloquium we e
xplain how particle theorists can help out with

\nhigh-precision calc
ulations of effective Hamiltonians for predicting

\ngravitational-wav
e emission from compact astrophysical objects.

\nWe explain reamarkab
le adavances in our ability to compute

\nscattering amplitudes in qua
ntum gravity based on ideas such as the

\nduality between color and k
inematics\, double-copy relations and

\ngeneralized unitarity. We th
en show how these ideas can be harnessed

\nusing modern ideas in effe
ctive field theory to obtain new and

\ndifficult to obtain general re
lativity corrections to the problem of

\nblack hole or neutron star i
nspirals.

Title : Chern -Simons-Matter Duality and Large-N Phase Diagram

\nAbstract : Pure C hern-Simons (CS) theory looks quite boring at a first glance. However\, th e theory becomes highly interesting and rich dynamics come out of it once we couple it to dynamical matter fields. It is quite remarkable that the l arge-N limit of this matter CS theory is exactly solvable. This led to the understanding of the fact that CS gauged fundamental regular (free) fermi on theories and CS gauged fundamental critical (Wilson-Fisher) boson theor ies are not different but secretly the same theory\, related by the level- rank duality. In this talk\, I will show the extension of this duality whe n the boson field gets condensed triggering the Higgs mechanism. In the ne xt step\, extending this duality to the regular boson/critical fermion cas e\, we will compute the exact quantum effective potential of the regular b oson theory and explore the large-N phase diagram of this theory.

\n END:VEVENT BEGIN:VEVENT UID:43ib2fqrnajdc58l93t6dcec84@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20200112T143000 DTEND;TZID=Asia/Jerusalem:20200112T153000 SEQUENCE:0 SUMMARY:Assaf Lanir URL:https://phsites.technion.ac.il/strings/event/assaf-lanir/ END:VEVENT BEGIN:VEVENT UID:67rgrop9t2s9ubum4918vlmjdh@google.com DTSTAMP:20220929T034848Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:“Turbulence\, CFT and Random Geometry”\nWe propose a field theo ry description of steady state incompressible fluid turbulence at the iner tial range of scales in a general number of space dimensions.\nThe theory consists of a Kolmogorov linear scaling mean field theory dressed by a Nam bu-Goldstone dilaton mode that induces a random measure on the inertial ra nge.\nWe derive a KPZ-type formula for the anomalous scalings of the veloc ity structure functions\, the velocity gradients and the local energy diss ipation\, and relate the dimensionless intermittency parameter to the boun dary conformal anomaly. DTSTART;TZID=Asia/Jerusalem:20200114T103000 DTEND;TZID=Asia/Jerusalem:20200114T113000 SEQUENCE:0 SUMMARY:Yaron Oz URL:https://phsites.technion.ac.il/strings/event/yaron-oz/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n“Turbulence\, CFT and Random Geometry”

\nWe propose a field theory description of
steady state incompressible fluid turbulence at the inertial range of sca
les in a general number of space dimensions.

\nThe theory consists of
a Kolmogorov linear scaling mean field theory dressed by a Nambu-Goldston
e dilaton mode that induces a random measure on the inertial range.

\nWe derive a KPZ-type formula for the anomalous scalings of the velocity
structure functions\, the velocity gradients and the local energy dissipat
ion\, and relate the dimensionless intermittency parameter to the boundary
conformal anomaly.

Title: Exact results for 5d SCFTs with holographic duals in Type IIB

\nAbstract: Five-dimensional superconformal field theories (5d SCFTs) play an interest ing role in the general understanding of quantum field theory. They provid e strongly-coupled UV fixed points with remarkable features for many pertu rbatively non-renormalizable gauge theories\, and upon compactification th ey provide new insights into lower-dimensional theories. In this talk rece nt progress in the holographic and large-N field theory understanding of 5 d SCFTs engineered by 5-brane webs in Type IIB string theory will be discu ssed.

\n END:VEVENT BEGIN:VEVENT UID:4njmvhclsiikt1j1chrn95ul87@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20200119T143000 DTEND;TZID=Asia/Jerusalem:20200119T153000 SEQUENCE:0 SUMMARY:Belal Nazzal URL:https://phsites.technion.ac.il/strings/event/belal-nazzal/ END:VEVENT BEGIN:VEVENT UID:4e3ud2ape0k718ip80nlc3unlh@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20200126T143000 DTEND;TZID=Asia/Jerusalem:20200126T153000 SEQUENCE:0 SUMMARY:Shlomo Razamat URL:https://phsites.technion.ac.il/strings/event/shlomo-razamat-4/ END:VEVENT BEGIN:VEVENT UID:3dl6v8jh8etvcthi5jprabqilr@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Branes and the Swampland\nAbstract: In this talk\, I wil l discuss consistency of N=(1\,0) supergravity theories in 10d and in 6d b y using 1/2 BPS string probes. Such string probes are expected to exist du e to completeness of the spectrum of charged branes in a gravitational the ory.I will show that some of the theories with N=(1\,0) supersymmetry in 1 0d and 6d\, which are otherwise consistent looking\, belong to the Swampla nd by showing that the central charge on the string probes in those gravit y theories are too small to host unitary representationsof the current alg ebra for the bulk gauge symmetries. DTSTART;TZID=Asia/Jerusalem:20200204T103000 DTEND;TZID=Asia/Jerusalem:20200204T113000 SEQUENCE:0 SUMMARY:Hee-Cheol Kim (POSTECH\, Korea) URL:https://phsites.technion.ac.il/strings/event/hee-cheol-kim-postech-kore a/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: Branes and the Swampland

\nAbstract: In this talk\, I will discuss consist ency of N=(1\,0) supergravity theories in 10d and in 6d by using 1/2 BPS s tring probes. Such string probes are expected to exist due to completeness of the spectrum of charged branes in a gravitational theory.I will show t hat some of the theories with N=(1\,0) supersymmetry in 10d and 6d\, which are otherwise consistent looking\, belong to the Swampland by showing tha t the central charge on the string probes in those gravity theories are to o small to host unitary representationsof the current algebra for the bulk gauge symmetries.

\n END:VEVENT BEGIN:VEVENT UID:1qnr4cfj4nefdvve8t19balcen@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title “AdS/CFT at finite string coupling”\nAbstractWe consider the S-matrix in Type IIB/IIA string theory\, and compare it to correlators of the stress tensor multiplet in various holographic CFTs. On flat space \, the leading small momentumcorrections to these S-matrices are protected and known at finite string coupling. At finite string coupling\, Type IIB on AdS_5 x S_5 is dual to 4dN=4 SYM at large N and finite complexified co upling tau\, while Type IIA on AdS_4 x S^7/Z_k is dual to 3d ABJM with Che rn-Simons level k at large N and fixed N/k^5. In each case\, we computethe CFT correlator to several orders in 1/N using supersymmetric localization \, and find that it matches the known S-matrix in the flat space limit\, w hich is the first non-perturbative (in string coupling) check of AdS/CFT. In the Type IIB case\, the 1/N coefficientsare modular functions of tau un der S-duality\, which receive infinite instanton corrections. In the Type IIA case\, the 1/N coefficients receive no instanton corrections\, and int erpolate from M-theory at small k (large string coupling) to Type IIA at l arge k(weak string coupling) DTSTART;TZID=Asia/Jerusalem:20200204T120000 DTEND;TZID=Asia/Jerusalem:20200204T130000 SEQUENCE:0 SUMMARY:Shai Chester URL:https://phsites.technion.ac.il/strings/event/shai-chester/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

<
span>Title “AdS/CFT at finite string coupling”

Abstract

We consider the S-matr
ix in Type IIB/IIA string theory\, and compare it to correlat
ors of the stress tensor multiplet in various holographic CFTs. On flat sp
ace\, the leading small momentumcorrections to these S-matrices are protec
ted and known at finite string coupling. At finite string coupling\, Type IIB on AdS_5 x S_5 is dual to 4dN=4
SYM at large N and finite complexified coupling tau\, while Type IIA on AdS_4 x S^7/Z_k is dual to 3d ABJM with Chern-Sim
ons level k at large N and fixed N/k^5. In each case\, we computethe CFT c
orrelator to several orders in 1/N using supersymmetric localization\, and
find that it matches the known S-matrix in the flat space limit\, which i
s the first non-perturbative (in string coupling) check of AdS/CFT. In the
Type IIB case\, the 1/N coefficientsare modular functions of tau under S-
duality\, which receive infinite instanton corrections. In the Type IIA ca
se\, the 1/N coefficients receive no instanton corrections\, and interpola
te from M-theory at small k (large string coupling) to Type IIA at large k
(weak string coupling)

Title: Dynami cs near a holographic first order phase transition

\nAbstract:

\nIn this talk I will discuss our recent work on time dependent dynamics for theories with a first order phase transition using a holographic descr iption. I will make a brief review of our previous work on holographic pha se separation which leads to a coupleof questions. In particular I will an alyze the collisions and merging of domains of different phases\, boost in variant evolution and some conclusions for the future study of the dynamic s of a confinement-deconfinement transition.

\n END:VEVENT BEGIN:VEVENT UID:4ohu1rj7ln09c5jpg751hrmhg0@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: The “Hubble Tension”: a growing disagreement between ear ly and late Universe observations\nAbstract: \nThere are two approaches to estimating the current expansion rate of the Universe\, which is parametr ised by the Hubble constant H0. One attempts to measure it directly (the m ost famous example of which relies on calibrating a distance ladder toward s standard-candletype-Ia supernovae in our local cosmic neighbourhood). Th e other is to predict its value based on information from the distant earl y Universe (such as the baryon acoustic oscillation scale\, which can be e xtracted from cosmic microwave background measurements)and assuming the st andard cosmological model\, known as ΛCDM. One of the most pressing myster ies in cosmology today is why H0 measurements based on these two approache s are growing in tension (the most recent assessments are up to ~5sigma di screpant)\, possiblyhinting at a failure of ΛCDM.\nI will describe the cur rent status of different measurements of the expansion rate (based on a wi de range of observables)\, point out their caveats and outline their prosp ects for improvement. From the theoretical point of view\, I will motivate a usefulway of reframing the tension\, and discuss the clues we have towa rds solving it with new physics beyond ΛCDM. DTSTART;TZID=Asia/Jerusalem:20200211T120000 DTEND;TZID=Asia/Jerusalem:20200211T130000 SEQUENCE:0 SUMMARY:Ely Kovetz URL:https://phsites.technion.ac.il/strings/event/ely-kovetz/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: The “H ubble Tension”: a growing disagreement between early and late Universe obs ervations

\nAbstract:

\nThere are two approaches to estimatin
g the current expansion rate of the Universe\, which is parametrised by th
e Hubble constant H0. One attempts to measure it directly (the most famous
example of which relies on calibrating a distance ladder towards standard
-candletype-Ia supernovae in our local cosmic neighbourhood). The other is
to predict its value based on information from the distant early Universe
(such as the baryon acoustic oscillation scale\, which can be extracted f
rom cosmic microwave background measurements)and assuming the standard cos
mological model\, known as ΛCDM. One of the most pressing mysteries in cos
mology today is why H0 measurements based on these two approaches are grow
ing in tension (the most recent assessments are up to ~5sigma discrepant)\
, possiblyhinting at a failure of ΛCDM.

\nI will describe the current
status of different measurements of the expansion rate (based on a wide r
ange of observables)\, point out their caveats and outline their prospects
for improvement. From the theoretical point of view\, I will motivate a u
sefulway of reframing the tension\, and discuss the clues we have towards
solving it with new physics beyond ΛCDM.

Title: Random
boundary geometry and gravity dual of $Tbar{T}$ deformation

\nAbstra
ct: We study the random geometry approach to the $Tbar{T}$ deformation of
2d conformal field theory developed by Cardy and discuss its realization i
n a gravity dual. In this representation the gravity dual of the $Tbar{T}$
deformation becomes a straightforward translation of the field theory lan
guage and the dual geometry is AdS$_3$ or BTZ black holes without a finite
cutoff but instead with random boundary diffeomorphisms\, reflecting an i
ncrease of degrees of freedom in the flow to the UV by an irrelevant geome
tric $Tbar{T}$ operator. We streamline the method of computation and calcu
late the energy spectrum and the thermal free energy in a manner that can
be directly translated into the gravity dual language. We further generali
ze this approach to correlation functions and reproduce the all-order resu
lt with universal logarithmic corrections computed by Cardy in a different
method. Thus this version of gravity dual of the $Tbar{T}$ deformation wo
rks not only for the energy spectrum and the thermal free energy but also
for correlation functions.

The title: “ A new topological symmetry of asymptotically flat spacetimes”

\nI wi ll show that asymptotically flat spacetimes are invariant\, in addition to the BMS group\, under a new dual supertranslation symmetry. The correspon ding new conserved charges are akin to the large magnetic U(1) charges in QED and they reveal a rich topologicalstructure exhibited by the asymptoti c metric as well as by the Hilbert space of asymptotic states. Among the r esults that I will describe in this talk are the construction of a gravita tional-magnetic monopole solution analogous to the Wu-Yang monopole in QED and the discovery of a new gravitational duality akin to electric-magnetic duality in field theory.

\n END:VEVENT BEGIN:VEVENT UID:3238fsfbmi3ucq6t8vgs9kbt1r@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Instantons in five-dimensional O(N) vector models \nAbst ract: In this talk\, I will review the construction of O(N) vector models above four dimensions\, and explain why one might think that\, in five di mensions\, there should exist O(N)-invariant CFTs at sufficiently large N. However\, a closer look at theseconstructions reveals that the CFTs are non-unitary because instanton effects lead to small imaginary parts of sca ling dimensions and OPE coefficients. DTSTART;TZID=Asia/Jerusalem:20200317T103000 DTEND;TZID=Asia/Jerusalem:20200317T113000 SEQUENCE:0 SUMMARY:Silviu Pufu\, Princeton (Postponed due to corona) URL:https://phsites.technion.ac.il/strings/event/ramy-brustein-4/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: Instan tons in five-dimensional O(N) vector models

\nAbstract: In this ta lk\, I will review the construction of O(N) vector models above four dimen sions\, and explain why one might think that\, in five dimensions\, there should exist O(N)-invariant CFTs at sufficiently large N. However\, a clo ser look at theseconstructions reveals that the CFTs are non-unitary becau se instanton effects lead to small imaginary parts of scaling dimensions a nd OPE coefficients.

\n END:VEVENT BEGIN:VEVENT UID:28jg4qsbm6uot5o98p235hb790@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: 5d SCFTs and Graphs \nAbstract:\nI will give an overview of recent progress towards classifying 5d N=1 SCFTs. The main tool is the realization in terms of M-theory on singular Calabi-Yau three-folds\, how ever we abstract the information about the UV fixed points into graphs\, a nd explain howthese encode RG-flows between 5d SCFTs\, weakly coupled desc riptions as well as dualities. DTSTART;TZID=Asia/Jerusalem:20200317T113000 DTEND;TZID=Asia/Jerusalem:20200317T123000 SEQUENCE:0 SUMMARY:Skura Schafer-Nameki\, Oxford (Postponed due to corona) URL:https://phsites.technion.ac.il/strings/event/skura-schafer-nameki/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: 5d SCF Ts and Graphs

\nAbstract:

\nI will give an overview of recent
progress towards classifying 5d N=1 SCFTs. The main tool is the realizatio
n in terms of M-theory on singular Calabi-Yau three-folds\, however we abs
tract the information about the UV fixed points into graphs\, and explain
howthese encode RG-flows between 5d SCFTs\, weakly coupled descriptions as
well as dualities.

Title: 5d SCF Ts and Graphs

\nI will give an overview of recent progress towards c lassifying 5d N=1 SCFTs. The main tool is the realization in terms of M-th eory on singular Calabi-Yau three-folds\, however we abstract the informat ion about the UV fixed points into graphs\, and explain howthese encode RG -flows between 5d SCFTs\, weakly coupled descriptions as well as dualities .

\n END:VEVENT BEGIN:VEVENT UID:527joup135vh5b638j9pt1ids2@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title:Continuum Quantum Field Theories for Fractons\nAbstract: Starting with a lattice system at short distances\, its long-distance beha vior is captured by a continuum Quantum Field Theory (QFT). This descript ion is universal\, i.e. it is independent of most of the details of the mi croscopic system. Surprisingly\, certain recently discovered lattice syste ms\, and in particular models of fractons\, seem to violate this general d ogma. Motivated by this apparent contradiction\, we will present exotic c ontinuum QFTs that describe these systems.\n\nThis will be a zoom joint se minar. The link will be sent to the regular participants of the joint sem inar. Other people who are interested to attend it send a message to \ncob i@tauex.tau.ac.il DTSTART;TZID=Asia/Jerusalem:20200421T150000 DTEND;TZID=Asia/Jerusalem:20200421T160000 SEQUENCE:0 SUMMARY:Nathan Seiberg\, IAS URL:https://phsites.technion.ac.il/strings/event/nathan-seiberg-ias-2/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle:Continu um Quantum Field Theories for Fractons

\nAbstract: Starting with a l attice system at short distances\, its long-distance behavior is captured by a continuum Quantum Field Theory (QFT). This description is universal\ , i.e. it is independent of most of the details of the microscopic system. Surprisingly\, certain recently discovered lattice systems\, and in parti cular models of fractons\, seem to violate this general dogma. Motivated by this apparent contradiction\, we will present exotic continuum QFTs tha t describe these systems.

\n\nThis will be a zoom joint seminar. The link will be sent to the regular participants of the joint seminar. Othe r people who are interested to attend it send a message to

\n\n< /BODY> END:VEVENT BEGIN:VEVENT UID:4t6a2ba89bqcu73lthbjp8p30h@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION: Slava Rychkov (IHES\, Bures-sur-Yvette)\ntitle:Supersymmetry a nd its absence in the Random Field Ising Model.\nAbstract:We will discuss the phase transition in the Ising model with magnetic impurities. By one k ind of lore\, this leads to a non-unitary supersymmetric CFT with scalar s upercharges (Parisi-Sourlas supersymmetry). By further lore\, Parisi-Sourl as SCFTin D dimensions is equivalent to a non-SUSY CFT in D-2 dimensions. It is known that this story is not fully correct\, but we will put some of it on firmer ground using non-perturbative CFT methods\, and we will prop ose a scenario for why the full conjecture isfailing. Joint work with Apra tim Kaviraj and Emilio Trevisani.\n \n \nThis will be a zoom joint seminar . The link will be sent to the regular participants of the joint seminar. Other people who are interested to attend it send a message to \ncobi@tau ex.tau.ac.il DTSTART;TZID=Asia/Jerusalem:20200505T113000 DTEND;TZID=Asia/Jerusalem:20200505T123000 SEQUENCE:0 SUMMARY:Slava Rychkov\, IHES\, Bures-sur Yvette URL:https://phsites.technion.ac.il/strings/event/slava-rychkov-ihes-ens/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nSlava Rychko v (IHES\, Bures-sur-Yvette)

\ntitle:

Supersymmetry and its abse
nce in the Random Field Ising Model.

Abstract:

We will discus
s the phase transition in the Ising model with magnetic impurities. By one
kind of lore\, this leads to a non-unitary supersymmetric CFT with scalar
supercharges (Parisi-Sourlas supersymmetry). By further lore\, Parisi-Sou
rlas SCFTin D dimensions is equivalent to a non-SUSY CFT in D-2 dimensions
. It is known that this story is not fully correct\, but we will put some
of it on firmer ground using non-perturbative CFT methods\, and we will pr
opose a scenario for why the full conjecture isfailing. Joint work with Ap
ratim Kaviraj and Emilio Trevisani.

This w ill be a zoom joint seminar. The link will be sent to the regular partici pants of the joint seminar. Other people who are interested to attend it s end a message to

\n\n END:VEVENT BEGIN:VEVENT UID:4f0pd6ra7ecda1fq4dahp21n0m@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:title: Holographic Pseudo Entropy\nabstract: In this talk\, we will study a generalization of holographic entanglement entro\npy. This qu antity is defined by a mininal area surface in an asymptoticaly AdS\n spac e with Euclidean time-dependence. We will give its CFT counterpart\, which \n we call pseudo entropy. We will also provide quantum information theore tic in\nterpretations of this quantity in several specific examples of qub it systems\,\nwhich help us to understand our results of pseudo entropy in CFTs and gravity\nduals. DTSTART;TZID=Asia/Jerusalem:20200512T110000 DTEND;TZID=Asia/Jerusalem:20200512T120000 SEQUENCE:0 SUMMARY:Tadashi Takayanagi\, YITP Kyoto URL:https://phsites.technion.ac.il/strings/event/tadashi-takayanagi-yitp-ky oto/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\ntitle: Hologr aphic Pseudo Entropy

\nabstract: In this talk\, we will study a gene
ralization of holographic entanglement entro

\npy. This quantity is d
efined by a mininal area surface in an asymptoticaly AdS

\n space wit
h Euclidean time-dependence. We will give its CFT counterpart\, which

\n we call pseudo entropy. We will also provide quantum information theor
etic in

\nterpretations of this quantity in several specific examples
of qubit systems\,

\nwhich help us to understand our results of pseu
do entropy in CFTs and gravity

\nduals.

title: “Holog raphic renormalization group flows on curved manifolds and F-theorems” \n\n

Abstract: Holographic RG flows will be studied where the QFT is b oth on flat and curved manifolds\, and their general structure will be ana lyzed.

\nQuantum phase transitions driven by curvature will be found and studied.

\nThe results will be used to propose new F-functions in 3 dimensions that may be generalizable also to higher dimensions.

\n \nThis will be a zoom joint seminar. The link will be sent to the regu lar participants of the joint seminar. Other people who are interested to attend it send a message to

\n\n END:VEVENT BEGIN:VEVENT UID:0js5bb3a1hutkh6mqkp8p1frmu@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title – An Analytical Toolkit for the S-matrix Bootstrap\nAbstr act – Motivated by the success of the conformal bootstrap\, we revisit the implications of elastic unitarity and extended analyticity for the S-matr ix of unitary\, relativistic\, gapped theories in d>2 spacetime dimensions . We consider two natural expansion of the non-perturbative amplitude — th e threshold and the large spin expansions\, as well as the relation betwee n them. Finally\, we discuss the implication of these to the numerical S-m atrix bootstrap. DTSTART;TZID=Asia/Jerusalem:20200526T113000 DTEND;TZID=Asia/Jerusalem:20200526T123000 SEQUENCE:0 SUMMARY:Amit Sever\, Tau Cern URL:https://phsites.technion.ac.il/strings/event/amit-sever-tau-cern/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle – An An
alytical Toolkit for the S-matrix Bootstrap

\nAbstract – Motivated by
the success of the conformal bootstrap\, we revisit the implications of e
lastic unitarity and extended analyticity for the S-matrix of unitary\, re
lativistic\, gapped theories in d>2 spacetime dimensions. We consider two
natural expansion of the non-perturbative amplitude — the threshold and th
e large spin expansions\, as well as the relation between them. Finally\,
we discuss the implication of these to the numerical S-matrix bootstrap.\n
END:VEVENT
BEGIN:VEVENT
UID:45um4ld11qkbcjb6hdfcdakm7s@google.com
DTSTAMP:20220929T034849Z
CATEGORIES;LANGUAGE=en-US:Neve Shalom
CONTACT:
DESCRIPTION:Title: An overview of the Swampland\nAbstract:The Swampland pro
gram aims at distinguishingeffective theories which can be consistently co
mpleted into quantum gravity in the ultraviolet from those which cannot. T
he main objective of this talk is to present an introduction to the field.
I will also present a brief overview of some recentwork which proposes an
d tests some Swampland constraints\, specifically relating to scale separa
tion in anti-deSitter spaces and to the presence of gravitational instanto
n corrections in supersymmetric theories.
DTSTART;TZID=Asia/Jerusalem:20200602T113000
DTEND;TZID=Asia/Jerusalem:20200602T123000
SEQUENCE:0
SUMMARY:Eran Palti BGU\, MPI Munich
URL:https://phsites.technion.ac.il/strings/event/eran-palti-bgu-mpi-munich/
X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Title : An overview of the Swampland

\nAbstract:The Swampla nd program aims at distinguishingeffective theories which can be consisten tly completed into quantum gravity in the ultraviolet from those which can not. The main objective of this talk is to present an introduction to the field. I will also present a brief overview of some recentwork which proposes and tests some Swampland constraints\, specifically relating to scale separation in anti-deSitter spaces and to the presence of gravitational instanton corrections in supersymmetric theories.< /font>

\n\n END:VEVENT BEGIN:VEVENT UID:13pdh3246k1ndvcu5iu869db9f@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title:\nColor Confinement and Bose-Einstein Condensation\n\nAbs tract: \nWe argue that partially-confined\, partially-deconfined phase\, i n which SU(M) subgroup of SU(N) gauge group deconfines\, exists between co mpletely confined phase and completely deconfinedphases. In the weak-coupl ing regime\, we describe this phase analytically\, by using the techniques developed by Aharony and collaborators in 2003. (If time permits\, we sho w the evidence at strong coupling as well\, by using the Monte Carlo metho d.) Based on this”partial confinement” picture\, we propose a unified desc ription of color confinement in the large-N gauge theory and Bose-Einstein condensation (BEC) in the system of identical bosons. Indistinguishabilit y associated with the symmetry group — SU(N) in gaugetheory\, and S_N perm utations in the system of identical bosons — is crucial for the formation of the condensed (confined) phase. We relate standard criteria\, based on off-diagonal long range order (ODLRO) for BEC and the Polyakov loop for ga uge theory. Theconstant offset of the distribution of the phases of the Po lyakov loop corresponds to ODLRO. This viewpoint may have implications for confinement at finite N\, and for quantum gravity via gauge/gravity duali ty. DTSTART;TZID=Asia/Jerusalem:20200609T113000 DTEND;TZID=Asia/Jerusalem:20200609T123000 SEQUENCE:0 SUMMARY:Masanori Hanada\, ( Southampton U.\, Surrey U. URL:https://phsites.technion.ac.il/strings/event/masanori-hanada-southampto n-u-surrey-u/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle:\n

Color Confinement and Bose-Einstein
Condensation\n

\n

Abstract: \n

We argue that partially-confined\, partially-deconfined phase\, in wh
ich SU(M) subgroup of SU(N) gauge group deconfines\, exists between comple
tely confined phase and completely deconfinedphases. In the weak-coupling
regime\, we describe this phase analytically\, by using the techniques dev
eloped by Aharony and collaborators in 2003. (If time permits\, we show th
e evidence at strong coupling as well\, by using the Monte Carlo method.)
Based on this”partial confinement” picture\, we propose a unified descript
ion of color confinement in the large-N gauge theory and Bose-Einstein con
densation (BEC) in the system of identical bosons. Indistinguishability as
sociated with the symmetry group — SU(N) in gaugetheory\, and S_N permutat
ions in the system of identical bosons — is crucial for the formation of t
he condensed (confined) phase. We relate standard criteria\, based on off-
diagonal long range order (ODLRO) for BEC and the Polyakov loop for gauge
theory. Theconstant offset of the distribution of the phases of the Polyak
ov loop corresponds to ODLRO. This viewpoint may have implications for con
finement at finite N\, and for quantum gravity via gauge/gravity duality.
\n
END:VEVENT
BEGIN:VEVENT
UID:2qprpg6kb047d0qe9sqop1c9qa@google.com
DTSTAMP:20220929T034849Z
CATEGORIES;LANGUAGE=en-US:Neve Shalom
CONTACT:
DESCRIPTION:D-instantons perturbation theory
DTSTART;TZID=Asia/Jerusalem:20200616T113000
DTEND;TZID=Asia/Jerusalem:20200616T123000
SEQUENCE:0
SUMMARY:Asoke Sen\, Harish-Chandra Res. Inst
URL:https://phsites.technion.ac.il/strings/event/asoke-sen-harish-chandra-r
es-inst/
X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n \\n\\n \\n\\n \\n\\n \\n\\n\n \\n\\n \\n\\n \\n\\n \\n\\n \\n\\n

D-instantons perturbation theory

\n END:VEVENT BEGIN:VEVENT UID:4m7dpk42lfc7qgk2visrvek094@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Boundary Conditions for Chiral Fermions\nAbstract: Iʼll describe boundary conditions for fermions in d=1+1\,\ndimensions\, using t he framework of boundary conformal field theory. Iʼll\nexplain how boundar y states are classified by a mod 2 index\, related to\ntheir SPT phase\, d escribe how one can follow RG flows from one boundary\nstate to another\, and give a novel perspective on the Z_8 classification\nof d=2+1 SPT phase s DTSTART;TZID=Asia/Jerusalem:20200623T113000 DTEND;TZID=Asia/Jerusalem:20200623T123000 SEQUENCE:0 SUMMARY:David Tong\, Cambridge URL:https://phsites.technion.ac.il/strings/event/david-tong-cambridge/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: Bounda ry Conditions for Chiral Fermions

\nAbstract: Iʼll describe boundary
conditions for fermions in d=1+1\,

\ndimensions\, using the framewor
k of boundary conformal field theory. Iʼll

\nexplain how boundary sta
tes are classified by a mod 2 index\, related to

\ntheir SPT phase\,
describe how one can follow RG flows from one boundary

\nstate to ano
ther\, and give a novel perspective on the Z_8 classification

\nof d=
2+1 SPT phases

Title:

\n< p>Modularity of supersymmetric partition functions\nAbstract:

\nIn this talk\, I will present a novel modular property of 4d N=1

\nsupersymmetric partition functions of supersymmetric theories with R-sym
metry. It is a generalization of the modular invariance of the supersymmet
ric partitionfunction of two-dimensional supersymmetric theories on a toru
s i.e. of the elliptic genus. It comes from requiring consistency of parti
tionfunctions under gluing and\, among other things\, can be used to reder
ive the supersymmetric Cardy formula for four-dimensional gaugetheories th
at has played a key role in computing the entropy of supersymmetric black
holes.

Title: Def ormations of JT Gravity and Matrix Models\,

\n\nAbstract: I will e xplain how the relation between two-dimensional JT gravity and a matrix mo del — that is a

\nrandom ensemble of quantum systems rather than a s pecific quantum system — can be generalized

\nwhen one perturbs the action of JT gravity to a more generic case. Based on arXiv:2006.13414.

\nSee also arXiv:2006.11317 by Maxfield and Turiaci.

\n\nAnyb ody who is not on the list of the Israel string joint seminar and would li ke to listen to this seminar send your email to cobi@tauex.tau.ac.il and y ou will receive the zoom link

\n END:VEVENT BEGIN:VEVENT UID:3ng7jeutgnf09pd29snnkn2l9b@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: “Non-Symmetries and 2-Dimensional QCD” ?Abstract :\nWe will review the subject of “non-symmetries’’ or “defect symmetries.” We wi ll argue that massless two dimensional QCD admits exponentially many such symmetries and we use them to prove deconfinement as well as to compute ex actly the tension of thestring in the small mass limit. DTSTART;TZID=Asia/Jerusalem:20200901T150000 DTEND;TZID=Asia/Jerusalem:20200901T160000 SEQUENCE:0 SUMMARY:Zohar Komargodski URL:https://phsites.technion.ac.il/strings/event/zohar-komargodski-3/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: “Non-
Symmetries and 2-Dimensional QCD” ?Abstract :

\nWe will review the su
bject of “non-symmetries’’ or “defect symmetries.” We will argue that mass
less two dimensional QCD admits exponentially many such symmetries and we
use them to prove deconfinement as well as to compute exactly the tension
of thestring in the small mass limit.

title: “Huma nly traversable wormholes”

\n END:VEVENT BEGIN:VEVENT UID:11k9cfdor28oebf2dbe1ci9jiu@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Partition functions of the tensionless string\nAbstract: I discuss string theory on AdS3xS3xT4 in the tensionless limit\,with one unit of NS-NS flux. This theory is conjectured to be dual to the symmetric product orbifold CFT. I show how to compute the full string partition fun ction on various locally AdS3 backgrounds\, such as thermal AdS3\, the BTZ black and conical defects\,and find that it is independent of the actual background\, but only depends on the boundary geometry. Consequently\, rep roducing the boundary partition function does not require a sum over bulk geometries\,but rather agrees with the string partition function on any bu lk geometry with the appropriate boundary. I argue that the same mechanism shows the factorization of the bulk partition function when geometries wi th disconnected boundaries are considered. DTSTART;TZID=Asia/Jerusalem:20200915T113000 DTEND;TZID=Asia/Jerusalem:20200915T123000 SEQUENCE:0 SUMMARY:Lorenz Eberhardt URL:https://phsites.technion.ac.il/strings/event/lorenz-eberhardt/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle: Partit ion functions of the tensionless string

\nAbstract: I discuss string theory on AdS3xS3xT4 in the tensionless limit\,with one unit of NS-NS flu x. This theory is conjectured to be dual to the symmetric product orbifold CFT. I show how to compute the full string partition function on various locally AdS3 backgrounds\, such as thermal AdS3\, the BTZ black and conica l defects\,and find that it is independent of the actual background\, but only depends on the boundary geometry. Consequently\, reproducing the boun dary partition function does not require a sum over bulk geometries\,but r ather agrees with the string partition function on any bulk geometry with the appropriate boundary. I argue that the same mechanism shows the factor ization of the bulk partition function when geometries with disconnected b oundaries are considered.

\n END:VEVENT BEGIN:VEVENT UID:3adpt8bs4gi6lm00l1cipqq752@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title:\nMerging Swampland Conjectures using strings and membran es\nAbstract:\nIn this talk I will discuss new relations that appear among the Swampland Conjectures when analysing the properties of low codimensio n BPS objects\, in particular strings and membranes in N=1 4D EFTs. I will review the state of the art of the Swamplandprogram and revisit the most important conjectures\, namely the Weak Gravity Conjecture (WGC) and the S wampland Distance Conjecture (SDC). Then I will describe how to apply the WGC to low codimension BPS objects by interpreting the 4d backreaction of these objectsas a classical RG flow of their couplings. Constraints on th e UV charges and tensions get then translated to constraints on the axioni c kinetic terms and scalar potential of the EFT\, which uncovers new relat ions among the Swampland Conjectures. In particular\,we show that the WGC for strings implies the SDC\, by using that infinite distance limits can b e realised as RG flow endpoints of fundamental axionic strings. Similarly\ , WGC-saturating membranes generate a scalar potential satisfying the de S itter Conjecture. DTSTART;TZID=Asia/Jerusalem:20200922T160000 DTEND;TZID=Asia/Jerusalem:20200922T170000 SEQUENCE:0 SUMMARY:Irene Valenzuela ( Harvard) URL:https://phsites.technion.ac.il/strings/event/irene-valenzuela-harvard/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nTitle:

\n< p>Merging Swampland Conjectures using strings and membranes\nAbstra
ct:

\nIn this talk I will discuss new relations that appear among the
Swampland Conjectures when analysing the properties of low codimension BP
S objects\, in particular strings and membranes in N=1 4D EFTs. I will rev
iew the state of the art of the Swamplandprogram and revisit the most impo
rtant conjectures\, namely the Weak Gravity Conjecture (WGC) and the Swamp
land Distance Conjecture (SDC). Then I will describe how to apply the WGC
to low codimension BPS objects by interpreting the 4d backreaction of thes
e objectsas a classical RG flow of their couplings. Constraints on the UV
charges and tensions get then translated to constraints on the axionic ki
netic terms and scalar potential of the EFT\, which uncovers new relations
among the Swampland Conjectures. In particular\,we show that the WGC for
strings implies the SDC\, by using that infinite distance limits can be re
alised as RG flow endpoints of fundamental axionic strings. Similarly\, WG
C-saturating membranes generate a scalar potential satisfying the de Sitte
r Conjecture.

Title:Regge ized scattering\, entanglement and chaos using AdS/CFT\n

ABSTRAC T:The eikonalized parton-parton scattering amplitude at large energy and < /pre>\nlarge impact parameter\, is dominated by the exchange of a hyp erbolic surface in\nwalled AdS. Its analytical continuation y ields a worldsheet instanton that is\nat the origin of the Reg geization of the amplitude and a thermal-like\nquantum entropy . I will construct the entangled density matrix following from the\nexchanged surface\, and show that its von-Neumann entanglement ent ropy\ncoincides with its thermal-like entropy. The ratio of t he entanglement entropy\nto the transverse growth of the excha nged surface is similar to the Bekenstein\nentropy ratio for a black-hole\, with a natural definition of saturation\nand th e on-set of chaos in high energy collisions. The largest eigenvalues \nof the entangled density matrix obey a cascade equation in rapid ity\,\nreminiscent of non-linear QCD evolution of wee-dipoles\nat low-x and weak coupling. We suggest that the largest eig envalues\ndescribe the probability distributions of wee-quant a at low-x\nand strong coupling that maybe measurable at prese nt and future hadron-hadron\nand lepton- hadron colliders.\n END:VEVENT BEGIN:VEVENT UID:4nq1jjjk2i3p5qm94c8adn9ahh@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Landau diagrams in AdS and S-matrices from conformal cor relators\nAbstract: Quantum field theories in AdS generate conformalcorrel ation functions on the boundary\, and in the limit where AdS is nearly fla t one should be able to extract an S-matrix from such correlators. We disc uss a particularly simple position-space procedure to do so. It features a direct map from boundary positionsto (on-shell) momenta and thereby relat es cross ratios to Mandelstam invariants. This recipe succeeds in several examples\, includes the momentum-conserving delta functions\, and can be s hown to imply the two proposals based on Mellin space and on the OPE data. Interestingly the procedure does not always work: the Landau singularities of a Feynman diagram are shown to be part of larger regions\, to be calle d `bad regions’\, where the flat-space limit of the Witten diagram diverge s. To capture these divergences we introducethe notion of Landau diagrams in AdS. As in flat space\, these describe on-shell particles propagating o ver large distances in a complexified space\, with a form of momentum cons ervation holding at each bulk vertex. As an application we recover the ano malousthreshold of the four-point triangle diagram at the boundary of a ba d region. DTSTART;TZID=Asia/Jerusalem:20201006T160000 DTEND;TZID=Asia/Jerusalem:20201006T170000 SEQUENCE:0 SUMMARY:Shota komatsu URL:https://phsites.technion.ac.il/strings/event/shota-komatsu/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title: Landau diagrams in AdS and S-matrices from conformal correlators

\nAbstrac t: Quantum field theories in AdS generate conformalcorrelation functions o n the boundary\, and in the limit where AdS is nearly flat one should be a ble to extract an S-matrix from such correlators. We discuss a particularl y simple position-space procedure to do so. It features a direct map from boundary positionsto (on-shell) momenta and thereby relates cross ratios t o Mandelstam invariants. This recipe succeeds in several examples\, includ es the momentum-conserving delta functions\, and can be shown to imply the two proposals based on Mellin space and on the OPE data.Interestingly the procedure does not always work: the Landau singularities of a Feynman dia gram are shown to be part of larger regions\, to be called `bad regions’\, where the flat-space limit of the Witten diagram diverges. To capture the se divergences we introducethe notion of Landau diagrams in AdS. As in fla t space\, these describe on-shell particles propagating over large distanc es in a complexified space\, with a form of momentum conservation holding at each bulk vertex. As an application we recover the anomalousthreshold o f the four-point triangle diagram at the boundary of a bad region.

\n END:VEVENT BEGIN:VEVENT UID:7dg17tuu7lqur4ffc8ihuvpi4i@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Boundary conditions for a free scalar field\nAbstract: \nIn the first part of the talk\, I will consider the problem of classifyi ng the conformal boundary conditions (b.c.) for the free scalar CFT. We wi ll see how to tackle this problem using conformal bootstrap techniques. In the case of 4d bulk\, I will show ournumerical results\, which feature a “kink” that indicates the existence of a non-trivial “interacting” b.c.\, besides the obvious Neumann and Dirichlet “free” b.c.’s.\nIn the second pa rt of the talk\, I will discuss the RG flow of a 4d free scalar field cou pled to large N vector models on the boundary. The (classically marginal) coupling involves the boundary mode of the scalar and the O(N) single-trac e scalar operator. Iwill explain that the resulting RG connects two fixed points with bulk and boundary decoupled\, and the local 3d sector is the f ree vector model in one end\, and the critical one in the other end. This same RG admits two weak-strong dual descriptions\, one fromthe free end\, and one from the critical end. DTSTART;TZID=Asia/Jerusalem:20201013T113000 DTEND;TZID=Asia/Jerusalem:20201013T123000 SEQUENCE:0 SUMMARY:Lorenzo di Pietro URL:https://phsites.technion.ac.il/strings/event/lorenzo-di-pietro-2/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title: Bound ary conditions for a free scalar field

\nAbstract:

\nIn the f irst part of the talk\, I will consider the problem of classifying the con formal boundary conditions (b.c.) for the free scalar CFT. We will see how to tackle this problem using conformal bootstrap techniques. In the case of 4d bulk\, I will show ournumerical results\, which feature a “kink” tha t indicates the existence of a non-trivial “interacting” b.c.\, besides th e obvious Neumann and Dirichlet “free” b.c.’s.

\nIn the second part of the talk\, I will discuss the RG flow of a 4d free scalar field couple d to large N vector models on the boundary. The (classically marginal) cou pling involves the boundary mode of the scalar and the O(N) single-trace s calar operator. Iwill explain that the resulting RG connects two fixed poi nts with bulk and boundary decoupled\, and the local 3d sector is the free vector model in one end\, and the critical one in the other end. This sam e RG admits two weak-strong dual descriptions\, one fromthe free end\, and one from the critical end.

\n END:VEVENT BEGIN:VEVENT UID:3se4418jbdb5e3chkq5g0h4ob5@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Quantum Extremal Islands Made Easy\nAbstract: We illustr ate the appearance of quantum extremal islands in holographic setups in hi gher dimensions. We emphasize the close parallel with the behaviour of hol ographic entanglement entropy in more familiar settings. DTSTART;TZID=Asia/Jerusalem:20201020T160000 DTEND;TZID=Asia/Jerusalem:20201020T170000 SEQUENCE:0 SUMMARY:Rob Myers URL:https://phsites.technion.ac.il/strings/event/rob-myers/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title: Qu antum Extremal Islands Made Easy\nAbstract: We illustrate the appea rance of quantum extremal islands in holographic setups in higher dimensio ns. We emphasize the close parallel with the behaviour of holographic enta nglement entropy in more familiar settings.

\n END:VEVENT BEGIN:VEVENT UID:4qlp7q9o9h4r8r9ufgqf6s6ngs@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title : Multi-point Bootstrap (and the search for a single open /closed string description of N=4 SYM) DTSTART;TZID=Asia/Jerusalem:20201027T160000 DTEND;TZID=Asia/Jerusalem:20201027T170000 SEQUENCE:0 SUMMARY:Pedro Vieira URL:https://phsites.technion.ac.il/strings/event/pedro-vieira/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title : Multi-point Bootstrap (and the search for a single open/clos ed string description of N=4 SYM)

\n END:VEVENT BEGIN:VEVENT UID:5p3dt4dukfl17kcr4aukfda788@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Flux-based statistical prediction of three-body outcomes \n\nAbstract: The three-body problem in Newtonian gravity is one of the ol dest and richest problems in physics. Giants worked on it and it served as the source of numerous fields in theoretical physics and mathematics incl uding perturbation theory\, topology and chaos. Yet\, it remains unsolved\ , and up to this work\, the associated statistical theory was incomplete a nd flawed. \nHere\, I present a reduction of the differential decay rate i n a factorized form. One factor is the flux of phase-space volume\, rather than the volume itself which was used in all previous works\, and it is g iven in a cutoff-independent closed-form. The other factor is related to t he chaotic absorptivity and to Kirchhoff’s law of thermal radiation\, also known as greybody radiation. Numerical evidence will be presented. I beli eve that this exact factorization cracks the problem and would allow futur e progress. Based on https://arxiv.org/abs/2002.11496 DTSTART;TZID=Asia/Jerusalem:20201103T160000 DTEND;TZID=Asia/Jerusalem:20201103T170000 SEQUENCE:0 SUMMARY:Barak Kol URL:https://phsites.technion.ac.il/strings/event/barak-kol-2/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title: Fl ux-based statistical prediction of three-body outcomes\n\nAbstract: The three-body problem in Newtonian gravity is one of the olde st and richest problems in physics. Giants worked on it and it served as t he source of numerous fields in theoretical physics and mathematics includ ing perturbation theory\, topology and chaos. Yet\, it remains unsolved\, and up to this work\, the associated statistical theory was incomplete and flawed. \nHere\, I present a reduction of the differential dec ay rate in a factorized form. One factor is the flux of phase-space volume \, rather than the volume itself which was used in all previous works\, an d it is given in a cutoff-independent closed-form. The other factor is rel ated to the chaotic absorptivity and to Kirchhoff’s law of thermal radiati on\, also known as greybody radiation. Numerical evidence will be presente d. I believe that this exact factorization cracks the problem and would al low future progress. Based on https://arxiv.org/abs/2002.11496< /a>\n END:VEVENT BEGIN:VEVENT UID:6nvnhudfgkgeld3o7m5mu5uc0q@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: The Unreasonable Effectiveness of Higher-Derivative Supe rgravity in AdS_4 Holography\n\nAbstract: I will describe the four-derivat ive corrections to four-dimensional N=2 minimal gauged supergravity and sh ow that they are controlled by two constants. Interestingly\, the solution s of the equations of motion in the two-derivative theory are not modified by the higher-derivative corrections. I will use this to arrive at a gene ral formula for the regularized on-shell action for any asymptotically loc ally AdS_4 solution of the theory and show how the higher-derivative corre ctions affect black hole thermodynamic quantities in a universal way. I wi ll employ these results in the context of holography to derive new explici t results for the subleading corrections in the large N expansion of super symmetric partition functions on various compact manifolds for a large cla ss of three-dimensional SCFTs arising from M2- and M5-branes. I will also briefly discuss possible extensions and generalizations of these results. DTSTART;TZID=Asia/Jerusalem:20201110T160000 DTEND;TZID=Asia/Jerusalem:20201110T170000 SEQUENCE:0 SUMMARY:Nikolay Bobev URL:https://phsites.technion.ac.il/strings/event/nikolay-bobev/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title: The Unreasonable Effectiveness of Higher- Derivative Supergravity in AdS_4 Holography

\n\nAbstract: I will describe the four-derivative corrections to four-dimensional N=2 m inimal gauged supergravity and show that they are controlled by two consta nts. Interestingly\, the solutions of the equations of motion in the two-d erivative theory are not modified by the higher-derivative corrections. I will use this to arrive at a general formula for the regularized on-shell action for any asymptotically locally AdS_4 solution of the theory and sho w how the higher-derivative corrections affect black hole thermodynamic qu antities in a universal way. I will employ these results in the context of holography to derive new explicit results for the subleading corrections in the large N expansion of supersymmetric partition functions on various compact manifolds for a large class of three-dimensional SCFTs arising fro m M2- and M5-branes. I will also briefly discuss possible extensions and g eneralizations of these results.

\n END:VEVENT BEGIN:VEVENT UID:09sgiso2nhu4fujvhu54j487hs@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Bar’s journal club\nTime: Nov 15\, 2020 02:30 PM Jerusalem\nJo in Zoom Meeting\nhttps://technion.zoom.us/j/99099738727\nMeeting ID: 990 9 973 8727\nOne tap mobile\n+972553301762\,\,99099738727# Israel\n+972397866 88\,\,99099738727# Israel\nDial by your location\n +972 55 330 1762 Israel\n +972 3 978 6688 Israel\nMeeting ID: 990 9973 8727\nFind y our local number: https://technion.zoom.us/u/aeDHxVQalR DTSTART;TZID=Asia/Jerusalem:20201115T143000 DTEND;TZID=Asia/Jerusalem:20201115T153000 SEQUENCE:0 SUMMARY:Bar’s journal club URL:https://phsites.technion.ac.il/strings/event/bars-journal-club/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\nTopic: Bar’s journal club

\n

\nTime: Nov 15\, 2020 02:30 PM JerusalemJoin Z oom Meeting

\n

\nhttps://technion.zoom.us/j/99099738727Meeting ID: 990 9973 8727

\n

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\n END:VEVENT BEGIN:VEVENT UID:5qp9opsepki5kmkdul47badse3@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Fine probes of quantum chaosAbstract: Quantum chaotic dy namics is associated to diverse physical phenomena and signatures. In this talk\, we describe progress in building effective theories for three of t hese: the butterfly effect\, the pole skipping phenomenon\, and thermaliza tion through the lens of entanglement entropy. We uncover their interplay by showing that the butterfly velocity plays an important role in all thre e manifestations of chaos. The discussion is informed by results from AdS/ CFT and from models of SYK type. DTSTART;TZID=Asia/Jerusalem:20201117T160000 DTEND;TZID=Asia/Jerusalem:20201117T170000 SEQUENCE:0 SUMMARY:Mark Mezei URL:https://phsites.technion.ac.il/strings/event/mark-mezei/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n +972 55 330 1762 Israel

\n +972 3 978 6688 Israel

\nMeeting ID: 990 9973 8727

\nFind your local number : https://technion.zoom.us/u/aeDHxVQalR\\n\\n Title: Fine probes of quantum chaos

\n END:VEVENT BEGIN:VEVENT UID:5p301f93nik5okete4a8pp5n1r@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Anton’s talk\nTime: Nov 22\, 2020 02:30 PM Jerusalem\nJoin Zoo m Meeting\nhttps://technion.zoom.us/j/96411533871\nMeeting ID: 964 1153 38 71\nOne tap mobile\n+972553301762\,\,96411533871# Israel\n+97239786688\,\, 96411533871# Israel\nDial by your location\n +972 55 330 1762 Israe l\n +972 3 978 6688 Israel\nMeeting ID: 964 1153 3871\nFind your lo cal number: https://technion.zoom.us/u/aggbKmz7h DTSTART;TZID=Asia/Jerusalem:20201122T143000 DTEND;TZID=Asia/Jerusalem:20201122T153000 SEQUENCE:0 SUMMARY:Anton’s journal club URL:https://phsites.technion.ac.il/strings/event/antons-journal-club/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

< br style='font-family: Calibri\, Helvetica\, sans-serif\, serif\, EmojiFon t\;font-size: 16px'>Abstract: Quantum chaotic dynam ics is associated to diverse physical phenomena and signatures. In this ta lk\, we describe progress in building effective theories for three of thes e: the butterfly effect\, the pole skipping phenomenon\, and thermalizatio n through the lens of entanglement entropy. We uncover their interplay by showing that the butterfly velocity plays an important role in all three m anifestations of chaos. The discussion is informed by results from AdS/CFT and from models of SYK type.\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\nTopic: Anton ’s talk

\n

\nTime: Nov 22\, 2020 02:30 PM JerusalemJoin Zoom Me eting

\n

\nhttps://technion.zoom.us/j/96411533871Meeting ID: 96 4 1153 3871

\n

\nOne tap mobile

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\n END:VEVENT BEGIN:VEVENT UID:7ot4id2eam1jl906b0nr4ikumg@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Gravity from Averaging CFTs\nAbstract: I will explore th e idea that certain theories of gravity in Anti-de\nSitter space are dual to an average over an ensemble of quantum\ntheories\, rather than to a spe cific quantum theory. I will describe\nan average over Narain’s family of two-dimensional conformal field\ntheories which describe free bosons on a torus\, and compute the\npartition function using the Siegel-Weil formula . The result takes\nthe form of a sum over geometries as one would expect in a theory of\ngravity. But the gravitational theory looks more like a Chern-Simons\ntheory than like Einstein gravity. DTSTART;TZID=Asia/Jerusalem:20201124T160000 DTEND;TZID=Asia/Jerusalem:20201124T170000 SEQUENCE:0 SUMMARY:Alex Maloney URL:https://phsites.technion.ac.il/strings/event/alex-maloney/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n +972 55 330 1762 Israel

\n +972 3 978 6688 I srael

\nMeeting ID: 964 1153 3871

\nFind your local number: http s://technion.zoom.us/u/aggbKmz7h\\n\\n Title: Gravit y from Averaging CFTs

\nAbstract: I will explore the idea that certa in theories of gravity in Anti-de

\n END:VEVENT BEGIN:VEVENT UID:3sjtjsmde1abju7t9g4lc0b43v@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Sebastian’s journal club talk\nTime: Nov 29\, 2020 02:30 PM Je rusalem\nJoin Zoom Meeting\nhttps://technion.zoom.us/j/93922529082\nMeetin g ID: 939 2252 9082\nOne tap mobile\n+97239786688\,\,93922529082# Israel\n +972553301762\,\,93922529082# Israel\nDial by your location\n +972 3 978 6688 Israel\n +972 55 330 1762 Israel\nMeeting ID: 939 2252 9 082\nFind your local number: https://technion.zoom.us/u/aZYLQpUdS DTSTART;TZID=Asia/Jerusalem:20201129T143000 DTEND;TZID=Asia/Jerusalem:20201129T153000 SEQUENCE:0 SUMMARY:Sebastian’s journal club URL:https://phsites.technion.ac.il/strings/event/sebastians-journal-club/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\nSitter space are dual to an avera ge over an ensemble of quantum

\ntheories\, rather than to a specific quantum theory. I will describe

\nan average over Narain’s family o f two-dimensional conformal field

\ntheories which describe free boso ns on a torus\, and compute the

\npartition function using the Siegel -Weil formula. The result takes

\nthe form of a sum over geometries as one would expect in a theory of

\ngravity. But the gravitational theory looks more like a Chern-Simons

\ntheory than like Einstein gra vity.\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\nTopic: Sebas tian’s journal club talk

\n

\nTime: Nov 29\, 2020 02:30 PM JerusalemJoin Zoom Meeting

\n

\nhttps://technion.zoom.us/j/93922529082Meeting ID: 939 2252 9082

\n

\nOne tap mobile

\n+97239786688\,\, 93922529082# Israel

\n+972553301762\,\,93922529082# IsraelDi al by your location

\n END:VEVENT BEGIN:VEVENT UID:3co88s94vtqoadlucpmmc43irj@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Global symmetry\, Euclidean gravity\, and the black hole information problem\nAbstract: In this talk I will show how the essential ingredients of recent calculations of the Page curve of an evaporating bl ack hole can be usedto generalize a recent argument against global symmetr ies beyond the AdS/CFT correspondence to more realistic theories of quantu m gravity\, illustrating a close connection between the absence of global symmetries and a unitary resolution of the black hole informationproblem. I’ll also give several low-dimensional examples of quantum gravity theorie s which do not have a unitary resolution of the black hole information pro blem\, and which therefore can and do have global symmetries. Motivated by this discussion\, I’ll conjecturethat in a certain sense Euclidean quantu m gravity is equivalent to holography. Based on recent work with Edgar Sh aghoulian. DTSTART;TZID=Asia/Jerusalem:20201201T160000 DTEND;TZID=Asia/Jerusalem:20201201T170000 SEQUENCE:0 SUMMARY:Daniel Harlow URL:https://phsites.technion.ac.il/strings/event/daniel-harlow/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n +972 3 978 6688 Israel

\n + 972 55 330 1762 Israel

\nMeeting ID: 939 2252 9082

\nFind your l ocal number: https://technion.zoom.us/u/aZYLQpUdS\\n\\n \n

Title: Global symmetry\, Euclidean gravity\, and th e black hole information problemAbstract: In this talk I will show how the esse ntial ingredients of recent calculations of the Page curve of an evaporati ng black hole can be usedto generalize a recent argument against global sy mmetries beyond the AdS/CFT correspondence to more realistic theories of q uantum gravity\, illustrating a close connection between the absence of gl obal symmetries and a unitary resolution of the black hole informationprob lem. I’ll also give several low-dimensional examples of quantum gravity th eories which do not have a unitary resolution of the black hole informatio n problem\, and which therefore can and do have global symmetries. Motivat ed by this discussion\, I’ll conjecturethat in a certain sense Euclidean q uantum gravity is equivalent to holography. Based on recent work with Edg ar Shaghoulian.

\n END:VEVENT BEGIN:VEVENT UID:1e6qqnejoo43mp4hsq6oqti9k5@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Paolo’s talk\nTime: Dec 6\, 2020 02:30 PM Jerusalem\nJoin Zoom Meeting\nhttps://technion.zoom.us/j/96588524118\nMeeting ID: 965 8852 411 8\nOne tap mobile\n+97239786688\,\,96588524118# Israel\n+972553301762\,\,9 6588524118# Israel\nDial by your location\n +972 3 978 6688 Israel \n +972 55 330 1762 Israel\nMeeting ID: 965 8852 4118\nFind your lo cal number: https://technion.zoom.us/u/adtIpI2DKL DTSTART;TZID=Asia/Jerusalem:20201206T143000 DTEND;TZID=Asia/Jerusalem:20201206T153000 SEQUENCE:0 SUMMARY:Paolo’s talk URL:https://phsites.technion.ac.il/strings/event/paolos-talk/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\nTopic: Paolo ’s talk

\n

\nTime: Dec 6\, 2020 02:30 PM JerusalemJoin Zoom Mee ting

\n

\nhttps://technion.zoom.us/j/96588524118Meeting ID: 965 8852 4118

\n

\nOne tap mobile

\n+97239786688\,\,96588524118# Israe l

\n+972553301762\,\,96588524118# IsraelDial by your locatio n

\n END:VEVENT BEGIN:VEVENT UID:0oaogqg6bigrghidoo7djtrofv@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: The Statistical Mechanics of Near-BPS Black Holes\n\nAbs tract: The status of near extremal black holes in gravity and string theor y has long remained unclear due to the failure of black hole thermodynamic s at low temperatures. Such black holes have an AdS2 region\, and substant ial progress in the last few years has been made on Jackiw-Teitelboim (JT) dilaton gravity\, which is an effective theory of nearly AdS2 spacetimes dual to a 1D “Schwarzian” theory. \n\nIn this talk\, we will derive and s olve an effective theory to describe 4D flat space black holes which are j ust above the BPS bound. This theory is an N=4 supersymmetric version of t he 2D Jackiw-Teitelboim gravity 1D Schwarzian correspondence which we wil l obtain from nearly AdS2xS2 black holes in 4D N=2 supergravity. Using the Schwarzian description of these low temperature black holes\, we can comp ute the partition function and density of states exactly. Our results veri fy several conjectures about near-BPS black holes coming from string theor y\, including an exact extremal degeneracy agreeing with Bekenstein-Hawkin g and a thermodynamic mass gap between extremal and near-extremal black ho les.\n\nBased on a recent paper (https://arxiv.org/abs/2011.01953) with MT H\, Luca Iliesiu\, Gustavo Turiaci\, and Wenli Zhao. DTSTART;TZID=Asia/Jerusalem:20201208T160000 DTEND;TZID=Asia/Jerusalem:20201208T170000 SEQUENCE:0 SUMMARY:Matthew Heydeman URL:https://phsites.technion.ac.il/strings/event/tba/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n +972 3 978 6688 Israel

\n +972 55 330 1762 Is rael

\nMeeting ID: 965 8852 4118

\nFind your local number: https ://technion.zoom.us/u/adtIpI2DKL\\n\\n Title: Th e Statistical Mechanics of Near-BPS Black Holes\n\nAbstr act: The status of near extremal black holes in gravity and string theory has long remained unclear due to the failure of black hole thermodynamics at low temperatures. Such black holes have an AdS2 region\, and substantia l progress in the last few years has been made on Jackiw-Teitelboim (JT) d ilaton gravity\, which is an effective theory of nearly AdS2 spacetimes du al to a 1D “Schwarzian” theory. \n\nIn this talk\, we will derive and solve an effective theory to describe 4D flat space black holes which are just above the BPS bound. This theory is an N=4 supersymmetric version of the 2D Jackiw-Teitelboim gravity <-> 1D Schwarzian corresponden ce which we will obtain from nearly AdS2xS2 black holes in 4D N=2 supergra vity. Using the Schwarzian description of these low temperature black hole s\, we can compute the partition function and density of states exactly. O ur results verify several conjectures about near-BPS black holes coming fr om string theory\, including an exact extremal degeneracy agreeing with Be kenstein-Hawking and a thermodynamic mass gap between extremal and near-ex tremal black holes.

\n\nBased on a recent paper (https://arxiv.org/abs/2011.01953) with MTH\, Luca Iliesiu\, Gustavo Turiaci\, and Wenli Zhao. \n END:VEVENT BEGIN:VEVENT UID:6eb4m4cq41v726en27m1iq0f49@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20201215T160000 DTEND;TZID=Asia/Jerusalem:20201215T170000 SEQUENCE:0 SUMMARY:Hanukah – no seminar URL:https://phsites.technion.ac.il/strings/event/hanukah-no-seminar/ END:VEVENT BEGIN:VEVENT UID:58avs1pm4kc6rgcoquvkrtbqjr@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Photon Ring Autocorrelations\n\nAbstract: In the presenc e of a black hole\, light sources connect to observers along multiple path s. As a result\, observed brightness fluctuations must be correlated acros s different times and positions in black hole images. Photons that execute multiple orbits around the black hole appear near a critical curve in the observer sky\, giving rise to the photon ring. In the talk I will describ e the structure of a Kerr black hole’s photon ring. I will then discuss a novel observable we have recently proposed: the two-point correlation func tion of intensity fluctuations on the ring. I will describe its analytic c omputation within a toy model of stochastic emission\, and show that it ex hibits a universal\, self-similar pattern consisting of multiple peaks of identical shape: while the profile of each peak encodes statistical proper ties of fluctuations in the source\, the locations and heights of the peak s are determined purely by the black hole parameters. Measuring these peak s would demonstrate the existence of the photon ring without resolving its thickness\, and would provide estimates of black hole mass and spin. I wi ll discuss some prospective extensions and generalizations\, and argue tha t with regular monitoring over sufficiently long timescales\, this measure ment could be possible via interferometric imaging with modest improvement s to the Event Horizon Telescope. DTSTART;TZID=Asia/Jerusalem:20201222T160000 DTEND;TZID=Asia/Jerusalem:20201222T170000 SEQUENCE:0 SUMMARY:Shahar Hadar URL:https://phsites.technion.ac.il/strings/event/shahar-hadar/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title:Photon Ring Autocorrelations\n

\nAbstract~~: In the p resence of a black hole\, light sources connect to observers along multipl e paths. As a result\, observed brightness fluctuations must be correlated across different times and positions in black hole images. Photons that e xecute multiple orbits around the black hole appear near a critical curve in the observer sky\, giving rise to the photon ring. In the talk I will d escribe the structure of a Kerr black hole’s photon ring. I will then disc uss a novel observable we have recently proposed: the two-point correlatio n function of intensity fluctuations on the ring. I will describe its anal ytic computation within a toy model of stochastic emission\, and show that it exhibits a universal\, self-similar pattern consisting of multiple peak s of identical shape: while the profile of each peak encodes statistical p roperties of fluctuations in the source\, the locations and heights of the peaks are determined purely by the black hole parameters. Measuring these peaks would demonstrate the existence of the photon ring without resolvin g its thickness\, and would provide estimates of black hole mass and spin. I will discuss some prospective extensions and generalizations\, and argu e that with regular monitoring over sufficiently long timescales\, this mea surement could be possible via interferometric imaging with modest improve ments to the Event Horizon Telescope.~~\n END:VEVENT BEGIN:VEVENT UID:kp3vjp55mipf96ktojic984p30@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT:mailto:milan.paolo90@gmail.com DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nJoin Zoom Meeting\nhttps://technion.zoom.us/j/95507640967\nMeeting ID : 955 0764 0967\nOne tap mobile\n+972553301762\,\,95507640967# Israel\n+97 239786688\,\,95507640967# Israel\nDial by your location\n +972 55 3 30 1762 Israel\n +972 3 978 6688 Israel\nMeeting ID: 955 0764 0967 \nFind your local number: https://technion.zoom.us/u/ad23egj816 DTSTART;TZID=Asia/Jerusalem:20201227T143000 DTEND;TZID=Asia/Jerusalem:20201227T160000 LOCATION:https://technion.zoom.us/j/95507640967 SEQUENCE:0 SUMMARY:Assaf’s journal club talk URL:https://phsites.technion.ac.il/strings/event/assafs-journal-club-talk/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

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\n END:VEVENT BEGIN:VEVENT UID:01ofv8ulgsjmkvp95b6v5uf0p9@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Thermal order in large N conformal gauge theoriesAbstrac t: Our experience with many physical systems tells us that usually when a symmetry is spontaneously broken at low temperatures\, it is restored upon increasing the temperature sufficiently. The abundance of such systems r aises the question of whether this is a universal feature of all quantum s ystems. In this talk\, I will present examples of (3+1)-dimensional non-su persymmetric large N gauge theories which demonstrate violations of the ab ove feature. I will argue that in the N tending to infinity limit\, these theories have conformal manifolds which survive under all loop corrections to the beta functions of the couplings. I will show that under certain co nditions\, a subset of points on such a conformal manifold demonstrates th e spontaneous breaking of a global symmetry at all nonzero temperatures. F urthermore\, I will demonstrate that this symmetry breaking is accompanied by the Higgsing of a subset of gauge bosons leading the system to be in a persistent Brout-Englert-Higgs phase. DTSTART;TZID=Asia/Jerusalem:20201229T160000 DTEND;TZID=Asia/Jerusalem:20201229T170000 SEQUENCE:0 SUMMARY:Soumyadeep Chaudhuri URL:https://phsites.technion.ac.il/strings/event/soumyadeep-chaudhuri/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

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\nMeeting ID: 955 0764 0967

\nFind your local number: http s://technion.zoom.us/u/ad23egj816\\n\\n Title : Thermal order in large N conformal gauge theories

\n END:VEVENT BEGIN:VEVENT UID:b5men841s0v1ufkbpmsn9t23fc@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nJoin Zoom Meeting\nhttps://technion.zoom.us/j/93982508036\nMeeting ID : 939 8250 8036\nOne tap mobile\n+97239786688\,\,93982508036# Israel\n+972 553301762\,\,93982508036# Israel\nDial by your location\n +972 3 97 8 6688 Israel\n +972 55 330 1762 Israel\nMeeting ID: 939 8250 8036 \nFind your local number: https://technion.zoom.us/u/amf2JHgqX DTSTART;TZID=Asia/Jerusalem:20210103T143000 DTEND;TZID=Asia/Jerusalem:20210103T160000 LOCATION:https://technion.zoom.us/j/93982508036 SEQUENCE:0 SUMMARY:Belal’s journal club talk URL:https://phsites.technion.ac.il/strings/event/belals-journal-club-talk/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\nAbstract: Our experience with many physical systems tells us that usua lly when a symmetry is spontaneously broken at low temperatures\, it is re stored upon increasing the temperature sufficiently. The abundance of suc h systems raises the question of whether this is a universal feature of al l quantum systems. In this talk\, I will present examples of (3+1)-dimensi onal non-supersymmetric large N gauge theories which demonstrate violation s of the above feature. I will argue that in the N tending to infinity lim it\, these theories have conformal manifolds which survive under all loop corrections to the beta functions of the couplings. I will show that under certain conditions\, a subset of points on such a conformal manifold demo nstrates the spontaneous breaking of a global symmetry at all nonzero temp eratures. Furthermore\, I will demonstrate that this symmetry breaking is accompanied by the Higgsing of a subset of gauge bosons leading the system to be in a persistent Brout-Englert-Higgs phase. \\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

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\nhttps://technion.zoom.us/j/93982508036Meeting ID: 93 9 8250 8036

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\n END:VEVENT BEGIN:VEVENT UID:2qk6uj03ncc8oesphcr9dvj2cn@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Comments on holographic description of Narain theories.A bstract: I will discuss to what extent holographic description ofNarain th eories can mimic the conventional picture of large cholography with weakly coupled gravity in the bulk. Namely is itpossible that the effective IR b ulk theory consist of “$U(1)$gravity” amended with some additional states. This picture leads to ahypothesis that in the large central charge limit density of states ofany Narain theory would be bounded by below by that on e of “$U(1)$gravity.” This immediately implies maximal value of spectral g ap ofprimary fields is $Delta_1=c/(2pi e)$. In the rest of the talk Iwill discuss self-consistency of this picture using quantum code andchiral CFTs . First\, I will show the proposed picture yields a newbound on quantum st abilizer codes\, which is compatible with previouslyknown bounds in the li terature. Next\, I will discuss variance of thedensity of states\, which f or consistency\, must be vanishingly small inthe large $c$ limit. I will c onsider ensembles of code and chiral DTSTART;TZID=Asia/Jerusalem:20210105T160000 DTEND;TZID=Asia/Jerusalem:20210105T170000 SEQUENCE:0 SUMMARY:Anatoly Dymarsky URL:https://phsites.technion.ac.il/strings/event/anatoly-dymarsky-2/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

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\nMeeting ID: 939 8250 8036

\nFind your local number: http s://technion.zoom.us/u/amf2JHgqX\\n\\n Title: Comments on h olographic description of Narain theories.

Abstract: I will discuss to what extent holographi c description of

Narain theories can mimic the conventional picture of large c

holography with weakly coupled gravity in the bulk. Namely is it

possible that the effective IR bul k theory consist of “$U(1)$

gravity” amended with some additional states. This pictu re leads to a

hypothesis that in the large central charge limit density of states of~~any Narai n theory would be bounded by below by that one of “$U(1)$~~

gravity.” This immediately implies maximal value of spectral gap of

primary fields is $Delta_1=c/(2pi e)$. In the rest of the talk I

will discuss self-consistency of this picture using quantum c ode and

ch iral CFTs. First\, I will show the proposed picture yields a new

bound on quantum st abilizer codes\, which is compatible with previously

known bounds in the literature. Next\, I will discuss variance of the

density of states\, which for consistency\, m ust be vanishingly small in

the large $c$ limit. I will consider ensembles of code a nd chiral

\n END:VEVENT BEGIN:VEVENT UID:6e2d2odlugrrcajrgll6kpi868@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nJoin Zoom Meeting\nhttps://technion.zoom.us/j/99660586760\nMeeting ID : 996 6058 6760\nOne tap mobile\n+97239786688\,\,99660586760# Israel\n+972 553301762\,\,99660586760# Israel\nDial by your location\n +972 3 97 8 6688 Israel\n +972 55 330 1762 Israel\nMeeting ID: 996 6058 6760 \nFind your local number: https://technion.zoom.us/u/adEFoxrg2v DTSTART;TZID=Asia/Jerusalem:20210110T143000 DTEND;TZID=Asia/Jerusalem:20210110T153000 LOCATION:https://technion.zoom.us/j/99660586760 SEQUENCE:0 SUMMARY:Dean’s journal club talk URL:https://phsites.technion.ac.il/strings/event/deans-journal-club-talk/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n

~~ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.~~~~\n~~Join Zoom Me eting

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\n END:VEVENT BEGIN:VEVENT UID:1fh61lkvve0kuvd0e9lqg45c72@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Twistors\, Integrability and 4d Chern-Simons Theory\n\nA bstract: It has long been known that many classical integrable systems can be obtained as symmetry reductions of the anti-self-dual Yang-Mills equat ions. Following a suggestion of Costello\, I’ll show that actions for asd YM arise from holomorphic Chern-Simons theory on twistor space\, defined w ith the help of a choice of meromorphic (3\,0)-form. Applying the symmetry reduction in twistor space\, one instead arrives at the description of th e integrable system in terms of 4d Chern-Simons theory of Costello & Yamaz aki. DTSTART;TZID=Asia/Jerusalem:20210112T160000 DTEND;TZID=Asia/Jerusalem:20210112T170000 SEQUENCE:0 SUMMARY:David Skinner URL:https://phsites.technion.ac.il/strings/event/david-skinner/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

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\nMeeting ID: 996 6058 6760

\nFind your local number: http s://technion.zoom.us/u/adEFoxrg2v\\n\\n Title: Twistors\, In tegrability and 4d Chern-Simons Theory\n

\nAbstract: It has lo ng been known that many classical integrable systems can be obtained as sy mmetry reductions of the anti-self-dual Yang-Mills equations. Following a suggestion of Costello\, I’ll show that actions for asd YM arise from holo morphic Chern-Simons theory on twistor space\, defined with the help of a choice of meromorphic (3\,0)-form. Applying the symmetry reduction in twis tor space\, one instead arrives at the description of the integrable syste m in terms of 4d Chern-Simons theory of Costello & Yamazaki.\n< /HTML> END:VEVENT BEGIN:VEVENT UID:khdqckmvihhfk6fhk7nbfeuiso@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nJoin Zoom Meeting\nhttps://technion.zoom.us/j/93584505801\nMeeting ID : 935 8450 5801\nOne tap mobile\n+972553301762\,\,93584505801# Israel\n+97 239786688\,\,93584505801# Israel\nDial by your location\n +972 55 3 30 1762 Israel\n +972 3 978 6688 Israel\nMeeting ID: 935 8450 5801 \nFind your local number: https://technion.zoom.us/u/aj7DGg2UG DTSTART;TZID=Asia/Jerusalem:20210117T143000 DTEND;TZID=Asia/Jerusalem:20210117T160000 LOCATION:https://technion.zoom.us/j/93584505801 SEQUENCE:0 SUMMARY:Orr’s journal club talk URL:https://phsites.technion.ac.il/strings/event/orrs-journal-club-talk/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

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\nhttps://technion.zoom.us/j/93584505801Meeting ID: 93 5 8450 5801

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\n END:VEVENT BEGIN:VEVENT UID:3ckfg9f9bu48o2d1r2g1vo7k3k@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Frontiers in Positive Geometry.\nAbstract: In this talk I will describe work in progress connecting scattering amplitudes to ampli tuhedra and positive geometries in kinematic space. For N=4 SYM in the pla nar limit\, I will show how the geometry of the amplituhedron naturally p rovides a new approach to non-perturbative physics. I will also describe c onjectural all-loop order\, non-planar\, non-supersymmetric amplituhedra for the tr(phi^3) theory–which are new (generally infinite) polytopes atta ched to any Riemann surface–and show how the connection to positive geomet ry forces the existence of “gravity” in this setting. DTSTART;TZID=Asia/Jerusalem:20210119T160000 DTEND;TZID=Asia/Jerusalem:20210119T170000 SEQUENCE:0 SUMMARY:Nima Arkani-Hamed URL:https://phsites.technion.ac.il/strings/event/nima-arkani-hamed/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

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\nMeeting ID: 935 8450 5801

\nFind your local number: http s://technion.zoom.us/u/aj7DGg2UG\\n\\n Title: Fronti ers in Positive Geometry.

\nAbstract: In this talk I will describe w ork in progress connecting scattering amplitudes to amplituhedra and posit ive geometries in kinematic space. For N=4 SYM in the planar limit\, I wil l show how the geometry of the amplituhedron naturally provides a new app roach to non-perturbative physics. I will also describe conjectural all-lo op order\, non-planar\, non-supersymmetric amplituhedra for the tr(phi^3) theory–which are new (generally infinite) polytopes attached to any Riema nn surface–and show how the connection to positive geometry forces the exi stence of “gravity” in this setting.

\n END:VEVENT BEGIN:VEVENT UID:4i7ckucqcb4cd2ko6714hj7b28@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nJoin Zoom Meeting\nhttps://technion.zoom.us/j/91205843934\nMeeting ID : 912 0584 3934\nOne tap mobile\n+97239786688\,\,91205843934# Israel\n+972 553301762\,\,91205843934# Israel\nDial by your location\n +972 3 97 8 6688 Israel\n +972 55 330 1762 Israel\nMeeting ID: 912 0584 3934 \nFind your local number: https://technion.zoom.us/u/acTGBZmez4 DTSTART;TZID=Asia/Jerusalem:20210124T143000 DTEND;TZID=Asia/Jerusalem:20210124T153000 LOCATION:https://technion.zoom.us/j/91205843934 SEQUENCE:0 SUMMARY:Evyatar’s journal club talk URL:https://phsites.technion.ac.il/strings/event/evyatars-journal-club-talk / X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

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\n END:VEVENT BEGIN:VEVENT UID:27v2ufeapa5gqrbp7dpprvt0o9@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Using Soft Hair to Dissolve the Firewall\nAbstract: We b uild on the observation by Hawking\, Perry and Strominger that a global bl ack hole space-time supports a large number of soft hair degrees of freedo m to shed new light on the firewall argument by Almheiri\, Marolf\, Polchi nski\, and Sully. The soft hair carries a sizable amount of entropy and is encoded in a transition function that connects the asymptotic and near ho rizon regions. We argue that an infalling observer automatically measures the classical value of the soft mode before reachingthe horizon and that this measurement implements a code subspace projection that enables the re construction of interior operators. We use the soft hair dynamics to intr oduce an observer dependent notion of the firewall and show that an infall ing observer neverencounters a firewall before reaching the singularity. DTSTART;TZID=Asia/Jerusalem:20210126T160000 DTEND;TZID=Asia/Jerusalem:20210126T170000 SEQUENCE:0 SUMMARY:Sabrina Pasterski URL:https://phsites.technion.ac.il/strings/event/sabrina-pasterski/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n +972 3 978 6688 Israel

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\nMeeting ID: 912 0584 3934

\nFind your local number: http s://technion.zoom.us/u/acTGBZmez4\\n\\n Title: Using Soft Hair to Dissolve the Firewall

\nAbstract: We build on the obser vation by Hawking\, Perry and Strominger that a global black hole space-ti me supports a large number of soft hair degrees of freedom to shed new lig ht on the firewall argument by Almheiri\, Marolf\, Polchinski\, and Sully. The soft hair carries a sizable amount of entropy and is encoded in a tra nsition function that connects the asymptotic and near horizon regions. W e argue that an infalling observer automatically measures the classical va lue of the soft mode before reachingthe horizon and that this measurement implements a code subspace projection that enables the reconstruction of i nterior operators. We use the soft hair dynamics to introduce an observer dependent notion of the firewall and show that an infalling observer neve rencounters a firewall before reaching the singularity.

\n END:VEVENT BEGIN:VEVENT UID:08b1afn067f5dfgs628qhd7ipm@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20210202T093000 DTEND;TZID=Asia/Jerusalem:20210202T103000 SEQUENCE:0 SUMMARY:No seminars in February – semester break URL:https://phsites.technion.ac.il/strings/event/no-seminars-in-february-se mester-break/ END:VEVENT BEGIN:VEVENT UID:371eeh569c8h4j0ftf9pi9nvg4@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Detecting chaos in hydrodynamics \nAbstract: Hydrodynami cs assumes local equilibration and equilibration assumes ergodic mixing dr iven by chaos — at least in semi-classical systems. For a generic such sys tem the timescales of macroscopic thermalization and onset of microscopic chaos are very different. Nevertheless\, it is a pillar of Boltzmann trans port that long-time equilibration can be computed from microscopic dynamic s. We show how in these systems the two timescales are in fact related. Mo reover\, we show that a similar connection between both scales surprisingl y also exists in extremely strongly coupled systems through a phenomenon c hristened pole-skipping in hydrodynamic response. DTSTART;TZID=Asia/Jerusalem:20210302T160000 DTEND;TZID=Asia/Jerusalem:20210302T170000 SEQUENCE:0 SUMMARY:Koenraad Schalm URL:https://phsites.technion.ac.il/strings/event/koenraad-schalm/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title: Detect ing chaos in hydrodynamics

\nAbstract: Hydrodynamics assumes local equilibration and equilibration assumes ergodic mixing driven by chaos — a t least in semi-classical systems. For a generic such system the timescale s of macroscopic thermalization and onset of microscopic chaos are very di fferent. Nevertheless\, it is a pillar of Boltzmann transport that long-ti me equilibration can be computed from microscopic dynamics. We show how in these systems the two timescales are in fact related. Moreover\, we show that a similar connection between both scales surprisingly also exists in extremely strongly coupled systems through a phenomenon christened pole-sk ipping in hydrodynamic response.

\n END:VEVENT BEGIN:VEVENT UID:3udiq1p52gpo5opri53ogth979@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: A CFT Distance Conjecture\nAbs: We formulate conjectures relating the geometry of conformal manifolds to the spectrum of local ope rators in conformal field theories in d>2 spacetime dimensions. We focus o n conformal manifolds with limiting points at infinite distance with respe ct tothe Zamolodchikov metric. Our central conjecture is that all theories at infinite distance possess an emergent higher-spin symmetry\, generated by an infinite tower of currents whose anomalous dimensions vanish expone ntially in the distance. Our conjecturesare related to the Distance Conjec ture in the swampland program. We discuss the supporting evidence\, their holographic interpretation\, and implications for superconformal field the ories. DTSTART;TZID=Asia/Jerusalem:20210309T160000 DTEND;TZID=Asia/Jerusalem:20210309T170000 SEQUENCE:0 SUMMARY:Eric Perlmutter URL:https://phsites.technion.ac.il/strings/event/eric-perlmutter/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title: A CFT Distance Conjecture

\nAbs: We formulate conjectures relating the ge ometry of conformal manifolds to the spectrum of local operators in confor mal field theories in d>2 spacetime dimensions. We focus on conformal mani folds with limiting points at infinite distance with respect tothe Zamolod chikov metric. Our central conjecture is that all theories at infinite dis tance possess an emergent higher-spin symmetry\, generated by an infinite tower of currents whose anomalous dimensions vanish exponentially in the d istance. Our conjecturesare related to the Distance Conjecture in the swam pland program. We discuss the supporting evidence\, their holographic inte rpretation\, and implications for superconformal field theories.

\n END:VEVENT BEGIN:VEVENT UID:1rm2m51f17ek51his6qa45a9p1@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Replica wormhole\, Page curve\, global symmetry and remn ant\nAbstract:\nA central dogma in the current theoretical study of black holes is that they can be viewed as an ordinary quantum system with large degrees of freedom. In the talk I will argue that replica wormhole gives s trong evidence to the central dogma\, including deriving the Page curve of the Hawking radiation\, and an explicit construction of a complete basis of the black hole interior states. We will also comment on its relation wi th violation of global symmetry in quantum gravity. DTSTART;TZID=Asia/Jerusalem:20210316T160000 DTEND;TZID=Asia/Jerusalem:20210316T170000 SEQUENCE:0 SUMMARY:Zhenbin Yang URL:https://phsites.technion.ac.il/strings/event/zhenbin-yang/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title: Replic a wormhole\, Page curve\, global symmetry and remnant

\nAbstract:

\n END:VEVENT BEGIN:VEVENT UID:s10fhg8ij7ie89f7l1oqn9uvj8@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nJoin Zoom Meeting\nhttps://technion.zoom.us/j/95305234270\nMeeting ID : 953 0523 4270\nOne tap mobile\n+97239786688\,\,95305234270# Israel\n+972 553301762\,\,95305234270# Israel\nDial by your location\n +972 3 97 8 6688 Israel\n +972 55 330 1762 Israel\nMeeting ID: 953 0523 4270 \nFind your local number: https://technion.zoom.us/u/adh2WGvC3Z DTSTART;TZID=Asia/Jerusalem:20210322T140000 DTEND;TZID=Asia/Jerusalem:20210322T153000 LOCATION:https://technion.zoom.us/j/95305234270 SEQUENCE:0 SUMMARY:Anton’s talk URL:https://phsites.technion.ac.il/strings/event/antons-talk/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\nA central dogma in the current theoretical study of black holes is th at they can be viewed as an ordinary quantum system with large degrees of freedom. In the talk I will argue that replica wormhole gives strong evide nce to the central dogma\, including deriving the Page curve of the Hawkin g radiation\, and an explicit construction of a complete basis of the blac k hole interior states. We will also comment on its relation with violatio n of global symmetry in quantum gravity.\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\nJoin Zoom Me eting

\n

\nhttps://technion.zoom.us/j/95305234270Meeting ID: 95 3 0523 4270

\n

\nOne tap mobile

\n+97239786688\,\,95305234270# Isra el

\n+972553301762\,\,95305234270# IsraelDial by your locati on

\n END:VEVENT BEGIN:VEVENT UID:10nng9kkudngo6b2oi3shr5ssu@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Sebastians journal club\nTime: Apr 5\, 2021 02:00 PM Jerusalem \nJoin Zoom Meeting\nhttps://technion.zoom.us/j/94390689273\nMeeting ID: 9 43 9068 9273\nOne tap mobile\n+972553301762\,\,94390689273# Israel\n+97239 786688\,\,94390689273# Israel\nDial by your location\n +972 55 330 1762 Israel\n +972 3 978 6688 Israel\nMeeting ID: 943 9068 9273\nFi nd your local number: https://technion.zoom.us/u/aCe2bOff3 DTSTART;TZID=Asia/Jerusalem:20210405T140000 DTEND;TZID=Asia/Jerusalem:20210405T150000 LOCATION:Room 300 SEQUENCE:0 SUMMARY:Sebastian’s journal club URL:https://phsites.technion.ac.il/strings/event/sebastians-journal-club-2/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n +972 3 978 6688 Israel

\n +972 55 330 1762 I srael

\nMeeting ID: 953 0523 4270

\nFind your local number: http s://technion.zoom.us/u/adh2WGvC3Z\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\nTopic: Sebas tians journal club

\n

\nTime: Apr 5\, 2021 02:00 PM JerusalemJo in Zoom Meeting

\n

\nhttps://technion.zoom.us/j/94390689273Meet ing ID: 943 9068 9273

\n

\nOne tap mobile

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\n END:VEVENT BEGIN:VEVENT UID:12v6a3de181f6aan7d78d01ime@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Black hole microstate statistics from Euclidean wormhole s\nAbstract: Over the last several years\, it has been shown that black ho le microstate level statistics in various models of 2D gravity are encoded in wormhole amplitudes. These statistics quantitatively agree with predi ctions of random matrix theory for chaotic quantum systems\; this behavior is realized since the 2D theories in question are dual to matrix models. But what about black hole microstate statistics for Einstein gravity in 3 D and higher spacetime dimensions\, and ultimately in non-perturbative str ing theory? We will discuss progress in these directions. In 3D\, we com pute a wormhole amplitude that encodes the energy level statistics of BTZ black holes. In 4D and higher\, we find analogous wormholes which appear to encode the level statistics of small black holes just above threshold. Finally\, we study analogous Euclidean wormholes in the low-energy limit of type IIB string theory\; we provide evidence that they encode the level statistics of small black holes just above threshold in AdS5 x S5. Remar kably\, these wormholes appear to be stable in appropriate regimes\, and d ominate over brane-anti-brane nucleation processes in the computation of b lack hole microstate statistics. DTSTART;TZID=Asia/Jerusalem:20210406T160000 DTEND;TZID=Asia/Jerusalem:20210406T170000 SEQUENCE:0 SUMMARY:Jordan Cotler URL:https://phsites.technion.ac.il/strings/event/avia-raviv-moshe/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n +972 55 330 1762 Israel

\n +972 3 978 6688 Israel

\nMeeting ID: 943 9068 9273

\nFind your local nu mber: https://technion.zoom.us/u/aCe2bOff3\\n\\n Title: Black hole microstate statistics from Euclidean wormholes

\n END:VEVENT BEGIN:VEVENT UID:068b584e17tbl2nmb35n2dp68u@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Amos’s journal club\nTime: Apr 19\, 2021 02:00 PM Jerusalem\nJ oin Zoom Meeting\nhttps://technion.zoom.us/j/99684338553\nMeeting ID: 996 8433 8553\nOne tap mobile\n+972553301762\,\,99684338553# Israel\n+97239786 688\,\,99684338553# Israel\nDial by your location\n +972 55 330 176 2 Israel\n +972 3 978 6688 Israel\nMeeting ID: 996 8433 8553\nFind your local number: https://technion.zoom.us/u/aWZao6DwF DTSTART;TZID=Asia/Jerusalem:20210419T140000 DTEND;TZID=Asia/Jerusalem:20210419T150000 LOCATION:Room. 300 SEQUENCE:0 SUMMARY:Amos’s journal club URL:https://phsites.technion.ac.il/strings/event/amoss-journal-club/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\nAbstract: Over the last several years\, it has been shown that black hole microstate leve l statistics in various models of 2D gravity are encoded in wormhole ampli tudes. These statistics quantitatively agree with predictions of random m atrix theory for chaotic quantum systems\; this behavior is realized since the 2D theories in question are dual to matrix models. But what about bl ack hole microstate statistics for Einstein gravity in 3D and higher space time dimensions\, and ultimately in non-perturbative string theory? We wi ll discuss progress in these directions. In 3D\, we compute a wormhole am plitude that encodes the energy level statistics of BTZ black holes. In 4 D and higher\, we find analogous wormholes which appear to encode the leve l statistics of small black holes just above threshold. Finally\, we stud y analogous Euclidean wormholes in the low-energy limit of type IIB string theory\; we provide evidence that they encode the level statistics of sma ll black holes just above threshold in AdS5 x S5. Remarkably\, these worm holes appear to be stable in appropriate regimes\, and dominate over brane -anti-brane nucleation processes in the computation of black hole microsta te statistics.\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\nTopic: Amos’ s journal club

\n

\nTime: Apr 19\, 2021 02:00 PM JerusalemJoin Zoom Meeting

\n

\nhttps://technion.zoom.us/j/99684338553Meeting ID: 996 8433 8553

\n

\nOne tap mobile

\n+972553301762\,\,996843385 53# Israel

\n+97239786688\,\,99684338553# IsraelDial by your location

\n END:VEVENT BEGIN:VEVENT UID:402qsamr4a7r7rr8359gvb1cb9@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Defects and Anomalies in Quantum Field Theories\nAbstrac t: I will review some recent developments in understanding the structure o f anomalies in the presence of defects in CFTs. The defect insertions lead to new ‘t Hooft anomalies and conformal anomalies on the defect worldvolu me. The latter give riseto defect analogs of the c-theorem (a-theorem) whi ch establish the monotonicity of defect RG flows. With supersymmetry\, th e defect conformal anomalies are related to the ‘t Hooft anomalies for cer tain U(1) R-symmetry in a simple way\, and can be determinednon-perturbati vely from an algebraic procedure. In the talk I’ll mostly focus on surface defects to be concrete and comment on extensions and future directions to wards the end. DTSTART;TZID=Asia/Jerusalem:20210420T163000 DTEND;TZID=Asia/Jerusalem:20210420T173000 SEQUENCE:0 SUMMARY:Yifan Wang – SPECIAL TIME URL:https://phsites.technion.ac.il/strings/event/yifan-wang/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n +972 55 330 1762 Israel

\n +972 3 978 6688 Israel

\nMeeting ID: 996 8433 8553

\nFind your local numbe r: https://technion.zoom.us/u/aWZao6DwF\\n\\n Title: Defect s and Anomalies in Quantum Field Theories

\nAbstract: I will review some recent developments in understanding the structure of anomalies in th e presence of defects in CFTs. The defect insertions lead to new ‘t Hooft anomalies and conformal anomalies on the defect worldvolume. The latter gi ve riseto defect analogs of the c-theorem (a-theorem) which establish the monotonicity of defect RG flows. With supersymmetry\, the defect conforma l anomalies are related to the ‘t Hooft anomalies for certain U(1) R-symme try in a simple way\, and can be determinednon-perturbatively from an alge braic procedure. In the talk I’ll mostly focus on surface defects to be co ncrete and comment on extensions and future directions towards the end.

\n END:VEVENT BEGIN:VEVENT UID:39cg5oe9cs1te52uusvepcl39n@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Journal club\nTime: Apr 26\, 2021 02:00 PM Jerusalem\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)\n Apr 26 \, 2021 02:00 PM\n May 3\, 2021 02:00 PM\n May 10\, 2021 02: 00 PM\n May 17\, 2021 02:00 PM\n May 24\, 2021 02:00 PM\n May 31\, 2021 02:00 PM\n Jun 7\, 2021 02:00 PM\n Jun 14 \, 2021 02:00 PM\n Jun 21\, 2021 02:00 PM\n Jun 28\, 2021 02 :00 PM\nPlease download and import the following iCalendar (.ics) files to your calendar system.\nWeekly: https://technion.zoom.us/meeting/tJAvcu2tr jsvGNR8IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_zi GJYjY1vxDbcE3ULQRS7P7VxM6RAGdrk\nJoin Zoom Meeting\nhttps://technion.zoom. us/j/94254500520\nMeeting ID: 942 5450 0520\nOne tap mobile\n+97239786688\ ,\,94254500520# Israel\n+972553301762\,\,94254500520# Israel\nDial by your location\n +972 3 978 6688 Israel\n +972 55 330 1762 Israel \nMeeting ID: 942 5450 0520\nFind your local number: https://technion.zoom .us/u/aoIxBMYZh DTSTART;TZID=Asia/Jerusalem:20210426T140000 DTEND;TZID=Asia/Jerusalem:20210426T150000 LOCATION:room 300 SEQUENCE:0 SUMMARY:Oren’s journal club URL:https://phsites.technion.ac.il/strings/event/orens-journal-club/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\nTopic: Journ al club

\n

\nTime: Apr 26\, 2021 02:00 PM Jerusalem

\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)

\n Apr 2 6\, 2021 02:00 PM

\n May 3\, 2021 02:00 PM

\n May 10\, 2021 02:00 PM

\n May 17\, 2021 02:00 PM

\n Ma y 24\, 2021 02:00 PM

\n May 31\, 2021 02:00 PM

\n Jun 7\, 2021 02:00 PM

\n Jun 14\, 2021 02:00 PM

\n Jun 21\, 2021 02:00 PM

\n Jun 28\, 2021 02:00 PM

\nPleas e download and import the following iCalendar (.ics) files to your calenda r system.

\nWeekly: https://technion.zoom.us/meeting/tJAvcu2trjsvGNR8 IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_ziGJYjY1v xDbcE3ULQRS7P7VxM6RAGdrkJoin Zoom Meeting

\n

\nhttps://technion .zoom.us/j/94254500520Meeting ID: 942 5450 0520

\n

\nOne tap mo bile

\n+97239786688\,\,94254500520# Israel

\n+972553301762\,\,94 254500520# IsraelDial by your location

\n END:VEVENT BEGIN:VEVENT UID:15ghgfdcj2tqjhcn82h95ll4vr@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Hints of Gravitational Ergodicity\nAbstract: Recent deve lopments on black holes have shown that a\nunitarity-compatible Page curve can be obtained from an\nensemble-averaged semi-classical approximation. In this talk\, we\nemphasize (1) that this peculiar manifestation of unita rity is not\nspecific to black holes\, and (2) that it can emerge from a s ingle\nrealization of an underlying unitary theory. To make things explici t\,\nwe consider a hard sphere gas leaking slowly from a small box into a \nbigger box. We reproduce the unitarity-compatible Page curve of this\nsy stem\, semi-classically. Berry’s ensemble in which the eigenstates\nlive\, plays a crucial role. The computation has structural parallels\nto replic a wormholes\, relies crucially on ensemble averaging at each\nepoch\, and reveals the interplay between the multiple time-scales in\nthe problem. Wo rking with the ensemble averaged state rather than the\nentanglement entro py\, we can also engineer an information “paradox”.\nOur system provides a concrete example in which the ensemble\nunderlying the semi-classical Pag e curve is an ergodic proxy for a\ntime average\, and not an explicit aver age over many theories. The\nquestions we address here are logically indep endent of the existence\nof horizons\, so we expect that semi-classical gr avity should also be\nviewed in a similar light. DTSTART;TZID=Asia/Jerusalem:20210427T160000 DTEND;TZID=Asia/Jerusalem:20210427T170000 SEQUENCE:0 SUMMARY:Chethan Krishnan URL:https://phsites.technion.ac.il/strings/event/chethan-krishnan/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n +972 3 978 6688 Israel

\n +972 55 330 1762 Israel

\nMeeting ID: 942 5450 0520

\nFind your local number: https://technion.zoom.us/u/aoIxBM YZh\\n\\n Title: Hints of Gravitational Ergodicity

\nAbstract: Recent developments on black holes have shown that a

\n END:VEVENT BEGIN:VEVENT UID:437l22cks10lko8r2kevvel7pr@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Journal club\nTime: Apr 26\, 2021 02:00 PM Jerusalem\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)\n Apr 26 \, 2021 02:00 PM\n May 3\, 2021 02:00 PM\n May 10\, 2021 02: 00 PM\n May 17\, 2021 02:00 PM\n May 24\, 2021 02:00 PM\n May 31\, 2021 02:00 PM\n Jun 7\, 2021 02:00 PM\n Jun 14 \, 2021 02:00 PM\n Jun 21\, 2021 02:00 PM\n Jun 28\, 2021 02 :00 PM\nPlease download and import the following iCalendar (.ics) files to your calendar system.\nWeekly: https://technion.zoom.us/meeting/tJAvcu2tr jsvGNR8IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_zi GJYjY1vxDbcE3ULQRS7P7VxM6RAGdrk\nJoin Zoom Meeting\nhttps://technion.zoom. us/j/94254500520\nMeeting ID: 942 5450 0520\nOne tap mobile\n+97239786688\ ,\,94254500520# Israel\n+972553301762\,\,94254500520# Israel\nDial by your location\n +972 3 978 6688 Israel\n +972 55 330 1762 Israel \nMeeting ID: 942 5450 0520\nFind your local number: https://technion.zoom .us/u/aoIxBMYZh DTSTART;TZID=Asia/Jerusalem:20210503T140000 DTEND;TZID=Asia/Jerusalem:20210503T150000 LOCATION:Room 300 SEQUENCE:0 SUMMARY:Ben’s journal club URL:https://phsites.technion.ac.il/strings/event/bens-journal-club/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\nunitarity-compatible Page curve can be obt ained from an

\nensemble-averaged semi-classical approximation. In th is talk\, we

\nemphasize (1) that this peculiar manifestation of unit arity is not

\nspecific to black holes\, and (2) that it can emerge f rom a single

\nrealization of an underlying unitary theory. To make t hings explicit\,

\nwe consider a hard sphere gas leaking slowly from a small box into a

\nbigger box. We reproduce the unitarity-compatibl e Page curve of this

\nsystem\, semi-classically. Berry’s ensemble in which the eigenstates

\nlive\, plays a crucial role. The computation has structural parallels

\nto replica wormholes\, relies crucially o n ensemble averaging at each

\nepoch\, and reveals the interplay betw een the multiple time-scales in

\nthe problem. Working with the ensem ble averaged state rather than the

\nentanglement entropy\, we can al so engineer an information “paradox”.

\nOur system provides a concret e example in which the ensemble

\nunderlying the semi-classical Page curve is an ergodic proxy for a

\ntime average\, and not an explicit average over many theories. The

\nquestions we address here are logic ally independent of the existence

\nof horizons\, so we expect that s emi-classical gravity should also be

\nviewed in a similar light.\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\nTopic: Journ al club

\n

\nTime: Apr 26\, 2021 02:00 PM Jerusalem

\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)

\n Apr 2 6\, 2021 02:00 PM

\n May 3\, 2021 02:00 PM

\n May 10\, 2021 02:00 PM

\n May 17\, 2021 02:00 PM

\n Ma y 24\, 2021 02:00 PM

\n May 31\, 2021 02:00 PM

\n Jun 7\, 2021 02:00 PM

\n Jun 14\, 2021 02:00 PM

\n Jun 21\, 2021 02:00 PM

\n Jun 28\, 2021 02:00 PM

\nPleas e download and import the following iCalendar (.ics) files to your calenda r system.

\nWeekly: https://technion.zoom.us/meeting/tJAvcu2trjsvGNR8 IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_ziGJYjY1v xDbcE3ULQRS7P7VxM6RAGdrkJoin Zoom Meeting

\n

\nhttps://technion .zoom.us/j/94254500520Meeting ID: 942 5450 0520

\n

\nOne tap mo bile

\n+97239786688\,\,94254500520# Israel

\n+972553301762\,\,94 254500520# IsraelDial by your location

\n END:VEVENT BEGIN:VEVENT UID:1eo4fmlu7hdspvc0ev6o7tdnd0@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Stringy ER=EPR.\nAbstract: I will discuss a Lorentzian i nterpretation of the FZZ duality as an equivalence between string perturba tion theory about a two sided black hole and an entangled combination of d isconnected microstates. The microstates involve a condensate of folded st rings extending from a strong coupling region. Part of the machinery invol ves string theory defined on Schwinger-Keldysh contours in target space\, and a novel contour of integration of the string moduli associated to angu lar quantization. I will further present an AdS3 uplift of this duality. DTSTART;TZID=Asia/Jerusalem:20210504T170000 DTEND;TZID=Asia/Jerusalem:20210504T180000 SEQUENCE:0 SUMMARY:Daniel Jafferis – SPECIAL TIME URL:https://phsites.technion.ac.il/strings/event/daniel-jafferis-special-ti me/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n +972 3 978 6688 Israel

\n +972 55 330 1762 Israel

\nMeeting ID: 942 5450 0520

\nFind your local number: https://technion.zoom.us/u/aoIxBM YZh\\n\\n Title: String y ER=EPR.

\nAbstract: I will discuss a Lorentzian interpretation of the FZZ duality as an equivalence between string perturbation theory about a two sided black hole and an entangled combination of disconnected micro states. The microstates involve a condensate of folded strings extending f rom a strong coupling region. Part of the machinery involves string theory defined on Schwinger-Keldysh contours in target space\, and a novel conto ur of integration of the string moduli associated to angular quantization. I will further present an AdS3 uplift of this duality.

\n END:VEVENT BEGIN:VEVENT UID:5sbpn83eh5edgcqq3gtc8fnr6d@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Journal club\nTime: Apr 26\, 2021 02:00 PM Jerusalem\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)\n Apr 26 \, 2021 02:00 PM\n May 3\, 2021 02:00 PM\n May 10\, 2021 02: 00 PM\n May 17\, 2021 02:00 PM\n May 24\, 2021 02:00 PM\n May 31\, 2021 02:00 PM\n Jun 7\, 2021 02:00 PM\n Jun 14 \, 2021 02:00 PM\n Jun 21\, 2021 02:00 PM\n Jun 28\, 2021 02 :00 PM\nPlease download and import the following iCalendar (.ics) files to your calendar system.\nWeekly: https://technion.zoom.us/meeting/tJAvcu2tr jsvGNR8IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_zi GJYjY1vxDbcE3ULQRS7P7VxM6RAGdrk\nJoin Zoom Meeting\nhttps://technion.zoom. us/j/94254500520\nMeeting ID: 942 5450 0520\nOne tap mobile\n+97239786688\ ,\,94254500520# Israel\n+972553301762\,\,94254500520# Israel\nDial by your location\n +972 3 978 6688 Israel\n +972 55 330 1762 Israel \nMeeting ID: 942 5450 0520\nFind your local number: https://technion.zoom .us/u/aoIxBMYZh DTSTART;TZID=Asia/Jerusalem:20210510T140000 DTEND;TZID=Asia/Jerusalem:20210510T150000 LOCATION:Room 300 SEQUENCE:0 SUMMARY:Orr’s journal club URL:https://phsites.technion.ac.il/strings/event/orrs-journal-club/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\nTopic: Journ al club

\n

\nTime: Apr 26\, 2021 02:00 PM Jerusalem

\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)

\n Apr 2 6\, 2021 02:00 PM

\n May 3\, 2021 02:00 PM

\n May 10\, 2021 02:00 PM

\n May 17\, 2021 02:00 PM

\n Ma y 24\, 2021 02:00 PM

\n May 31\, 2021 02:00 PM

\n Jun 7\, 2021 02:00 PM

\n Jun 14\, 2021 02:00 PM

\n Jun 21\, 2021 02:00 PM

\n Jun 28\, 2021 02:00 PM

\nPleas e download and import the following iCalendar (.ics) files to your calenda r system.

\nWeekly: https://technion.zoom.us/meeting/tJAvcu2trjsvGNR8 IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_ziGJYjY1v xDbcE3ULQRS7P7VxM6RAGdrkJoin Zoom Meeting

\n

\nhttps://technion .zoom.us/j/94254500520Meeting ID: 942 5450 0520

\n

\nOne tap mo bile

\n+97239786688\,\,94254500520# Israel

\n+972553301762\,\,94 254500520# IsraelDial by your location

\n END:VEVENT BEGIN:VEVENT UID:284nf21193odds02j0ojilos1r@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Progress in celestial holography DTSTART;TZID=Asia/Jerusalem:20210511T160000 DTEND;TZID=Asia/Jerusalem:20210511T170000 SEQUENCE:0 SUMMARY:Andrew Strominger URL:https://phsites.technion.ac.il/strings/event/andrew-strominger/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n +972 3 978 6688 Israel

\n +972 55 330 1762 Israel

\nMeeting ID: 942 5450 0520

\nFind your local number: https://technion.zoom.us/u/aoIxBM YZh\\n\\n Progress in c elestial holography

\n END:VEVENT BEGIN:VEVENT UID:6arhvlcbr0v5k945cv0l9apkcv@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Deviations from factorization in SYK\nAbstract: Recently \, there has been a revived interest in multi-boundary holographic systems and the contribution of Euclidean wormholes\, in particular in Jackiw-Tei telboim (JT) gravity. We consider Sachdev-Ye-Kitaev (SYK) as a microscopic model for such holographic systems. While in JT gravity the non-factorizi ng contributions come from geometric wormholes\, we get that in SYK there are much larger contributions. We give a diagrammatic description of all t hose leading contributions\, analogous to Feynman diagrams. The holographi c behavior is particularly interesting for fixed SYK couplings due to fact orization\, and we comment on that as well. DTSTART;TZID=Asia/Jerusalem:20210518T160000 DTEND;TZID=Asia/Jerusalem:20210518T170000 SEQUENCE:0 SUMMARY:Vladimir Narovlansky URL:https://phsites.technion.ac.il/strings/event/vladimir-narovlansky/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title: Deviat ions from factorization in SYK

\nAbstract: Recently\, there has been a revived interest in multi-boundary holographic systems and the contribu tion of Euclidean wormholes\, in particular in Jackiw-Teitelboim (JT) grav ity. We consider Sachdev-Ye-Kitaev (SYK) as a microscopic model for such h olographic systems. While in JT gravity the non-factorizing contributions come from geometric wormholes\, we get that in SYK there are much larger c ontributions. We give a diagrammatic description of all those leading cont ributions\, analogous to Feynman diagrams. The holographic behavior is par ticularly interesting for fixed SYK couplings due to factorization\, and w e comment on that as well.

\n END:VEVENT BEGIN:VEVENT UID:ZOOM93315461558 DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:Physics Conference is inviting you to a scheduled Zoom meeting. \nJoin Zoom Meeting\nhttps://zoom.us/j/93315461558?pwd=ajBIOUFmRGI5b1FMUUR 5OG5Uclg0QT09\nMeeting ID: 933 1546 1558\nPasscode: 571258\nJoin by SIP\n9 3315461558@zoomcrc.com\nJoin by H.323\n162.255.37.11 (US West)\n162.255.36 .11 (US East)\n213.19.144.110 (Amsterdam Netherlands)\n213.244.140.110 (Ge rmany)\nMeeting ID: 933 1546 1558\nPasscode: 571258 DTSTART;TZID=Asia/Jerusalem:20210519T130000 DTEND;TZID=Asia/Jerusalem:20210519T210000 LOCATION:https://zoom.us/j/93315461558?pwd=ajBIOUFmRGI5b1FMUUR5OG5Uclg0QT09 RRULE:FREQ=DAILY;UNTIL=20210520T160000Z;INTERVAL=1;WKST=SU SEQUENCE:0 SUMMARY:11th Crete Regional Meeting in String Theory URL:https://phsites.technion.ac.il/strings/event/11th-crete-regional-meetin g-in-string-theory/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Physics Confe rence is inviting you to a scheduled Zoom meeting.

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\n END:VEVENT BEGIN:VEVENT UID:04obtvab7acmgeooa0ogtkldra@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Journal club\nTime: Apr 26\, 2021 02:00 PM Jerusalem\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)\n Apr 26 \, 2021 02:00 PM\n May 3\, 2021 02:00 PM\n May 10\, 2021 02: 00 PM\n May 17\, 2021 02:00 PM\n May 24\, 2021 02:00 PM\n May 31\, 2021 02:00 PM\n Jun 7\, 2021 02:00 PM\n Jun 14 \, 2021 02:00 PM\n Jun 21\, 2021 02:00 PM\n Jun 28\, 2021 02 :00 PM\nPlease download and import the following iCalendar (.ics) files to your calendar system.\nWeekly: https://technion.zoom.us/meeting/tJAvcu2tr jsvGNR8IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_zi GJYjY1vxDbcE3ULQRS7P7VxM6RAGdrk\nJoin Zoom Meeting\nhttps://technion.zoom. us/j/94254500520\nMeeting ID: 942 5450 0520\nOne tap mobile\n+97239786688\ ,\,94254500520# Israel\n+972553301762\,\,94254500520# Israel\nDial by your location\n +972 3 978 6688 Israel\n +972 55 330 1762 Israel \nMeeting ID: 942 5450 0520\nFind your local number: https://technion.zoom .us/u/aoIxBMYZh DTSTART;TZID=Asia/Jerusalem:20210524T140000 DTEND;TZID=Asia/Jerusalem:20210524T150000 LOCATION:Room 300 SEQUENCE:0 SUMMARY:Assaf’s journal club URL:https://phsites.technion.ac.il/strings/event/assafs-journal-club/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\n162.255 .37.11 (US West)

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\n213.244.140.110 (Germany)

\nMeeting ID: 93 3 1546 1558

\nPasscode: 571258\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

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\nTime: Apr 26\, 2021 02:00 PM Jerusalem

\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)

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\nMeeting ID: 942 5450 0520

\nFind your local number: https://technion.zoom.us/u/aoIxBM YZh\\n\\n Title: 6d/5d dualities from Higgsing

\nAbstract: (Based on https://arxiv.org/abs/2103.02799 with a slightly different title.)

\n END:VEVENT BEGIN:VEVENT UID:24h9krg4514ko8mdt5uloedc5d@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Journal club\nTime: Apr 26\, 2021 02:00 PM Jerusalem\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)\n Apr 26 \, 2021 02:00 PM\n May 3\, 2021 02:00 PM\n May 10\, 2021 02: 00 PM\n May 17\, 2021 02:00 PM\n May 24\, 2021 02:00 PM\n May 31\, 2021 02:00 PM\n Jun 7\, 2021 02:00 PM\n Jun 14 \, 2021 02:00 PM\n Jun 21\, 2021 02:00 PM\n Jun 28\, 2021 02 :00 PM\nPlease download and import the following iCalendar (.ics) files to your calendar system.\nWeekly: https://technion.zoom.us/meeting/tJAvcu2tr jsvGNR8IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_zi GJYjY1vxDbcE3ULQRS7P7VxM6RAGdrk\nJoin Zoom Meeting\nhttps://technion.zoom. us/j/94254500520\nMeeting ID: 942 5450 0520\nOne tap mobile\n+97239786688\ ,\,94254500520# Israel\n+972553301762\,\,94254500520# Israel\nDial by your location\n +972 3 978 6688 Israel\n +972 55 330 1762 Israel \nMeeting ID: 942 5450 0520\nFind your local number: https://technion.zoom .us/u/aoIxBMYZh DTSTART;TZID=Asia/Jerusalem:20210531T140000 DTEND;TZID=Asia/Jerusalem:20210531T150000 LOCATION:Room 300 SEQUENCE:0 SUMMARY:Paolo’s journal club URL:https://phsites.technion.ac.il/strings/event/paolos-journal-club/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

5d supersymmetric gauge theories are sometimes UV completed by 6d SCFTs. One such example is the duality between the affine quiver gauge theory in 5d and 6d so-called “conformal matter” theory label ed by a D or E type lie algebra. In this talk we will see that starting fr om this duality and performing nilpotent Higgsing on both sides\, one can generate a huge set of 6d/5d dualities. The 6d side often involves a twist along a compactification by a discrete symmetry. The 5d side does not alw ays admit a gauge theory description\, but sometimes does and involves an exceptional gauge group including G or F type or an exceptional (non-funda mental) matter content. As a byproduct\, we get a web-based formalism to c ompute the Nekrasov partition function for some of the exceptional 5d gaug e theories.\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\n

\nTime: Apr 26\, 2021 02:00 PM Jerusalem

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\nWeekly: https://technion.zoom.us/meeting/tJAvcu2trjsvGNR8 IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_ziGJYjY1v xDbcE3ULQRS7P7VxM6RAGdrkJoin Zoom Meeting

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\nMeeting ID: 942 5450 0520

\nFind your local number: https://technion.zoom.us/u/aoIxBM YZh\\n\\n Title: The On set of Quantum Chaos

\nAbstract: We study the quantum version of the Lyapunov exponent in disordered theories. Generically the quantum Lyapuno v exponent can only be computed in isolated CFTs\, and so not much is know n about the way in which chaos grows as we deform the theory away from wea k coupling. In this talk we describe families of theories in which the dis order coupling is an exactly marginal deformation\, allowing us to follow the Lyapunov exponent from weak to strong coupling. We find surprising beh aviors in some cases\, including a discontinuous transition into chaos\, w hich we compare to the expectation from classical chaos. We also describe a new method allowing for computations in nontrivial CFTs deformed by diso rder.

\n END:VEVENT BEGIN:VEVENT UID:2b8790o22vkrogog1el92gj8uj@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Journal club\nTime: Apr 26\, 2021 02:00 PM Jerusalem\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)\n Apr 26 \, 2021 02:00 PM\n May 3\, 2021 02:00 PM\n May 10\, 2021 02: 00 PM\n May 17\, 2021 02:00 PM\n May 24\, 2021 02:00 PM\n May 31\, 2021 02:00 PM\n Jun 7\, 2021 02:00 PM\n Jun 14 \, 2021 02:00 PM\n Jun 21\, 2021 02:00 PM\n Jun 28\, 2021 02 :00 PM\nPlease download and import the following iCalendar (.ics) files to your calendar system.\nWeekly: https://technion.zoom.us/meeting/tJAvcu2tr jsvGNR8IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_zi GJYjY1vxDbcE3ULQRS7P7VxM6RAGdrk\nJoin Zoom Meeting\nhttps://technion.zoom. us/j/94254500520\nMeeting ID: 942 5450 0520\nOne tap mobile\n+97239786688\ ,\,94254500520# Israel\n+972553301762\,\,94254500520# Israel\nDial by your location\n +972 3 978 6688 Israel\n +972 55 330 1762 Israel \nMeeting ID: 942 5450 0520\nFind your local number: https://technion.zoom .us/u/aoIxBMYZh DTSTART;TZID=Asia/Jerusalem:20210607T140000 DTEND;TZID=Asia/Jerusalem:20210607T150000 LOCATION:Room 300 SEQUENCE:0 SUMMARY:Bar’s journal club URL:https://phsites.technion.ac.il/strings/event/bars-journal-club-2/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\n

\nTime: Apr 26\, 2021 02:00 PM Jerusalem

\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)

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\n May 31\, 2021 02:00 PM

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\nMeeting ID: 942 5450 0520

\nFind your local number: https://technion.zoom.us/u/aoIxBM YZh\\n\\n Title: Large Charge Phases of CFTs

\nAbstract: CFTs with additional global symmet ries often possess significant simplification in the regime in which the c harges associated with the global symmetries become large. In this talk\, we review some recent developments in the subject of CFTs atlarge global c harges. We present results that are based on two papers: The first\, (base d on https://arxiv.org/abs/2102 .12583)involves the study of constraints due to spontaneously broken b oosts and dilatation symmetries around heavy states\, and the implications of the symmetry breaking for the spectrum of CFTs. In the second\, we stu dy boundary conformal field theories (BCFTs) witha global U(1) symmetry at the large charge regime.

\n END:VEVENT BEGIN:VEVENT UID:10b980efqnntmksqj70ngtnn7l@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Journal club\nTime: Apr 26\, 2021 02:00 PM Jerusalem\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)\n Apr 26 \, 2021 02:00 PM\n May 3\, 2021 02:00 PM\n May 10\, 2021 02: 00 PM\n May 17\, 2021 02:00 PM\n May 24\, 2021 02:00 PM\n May 31\, 2021 02:00 PM\n Jun 7\, 2021 02:00 PM\n Jun 14 \, 2021 02:00 PM\n Jun 21\, 2021 02:00 PM\n Jun 28\, 2021 02 :00 PM\nPlease download and import the following iCalendar (.ics) files to your calendar system.\nWeekly: https://technion.zoom.us/meeting/tJAvcu2tr jsvGNR8IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_zi GJYjY1vxDbcE3ULQRS7P7VxM6RAGdrk\nJoin Zoom Meeting\nhttps://technion.zoom. us/j/94254500520\nMeeting ID: 942 5450 0520\nOne tap mobile\n+97239786688\ ,\,94254500520# Israel\n+972553301762\,\,94254500520# Israel\nDial by your location\n +972 3 978 6688 Israel\n +972 55 330 1762 Israel \nMeeting ID: 942 5450 0520\nFind your local number: https://technion.zoom .us/u/aoIxBMYZh DTSTART;TZID=Asia/Jerusalem:20210614T140000 DTEND;TZID=Asia/Jerusalem:20210614T150000 LOCATION:Room 300 SEQUENCE:0 SUMMARY:Belal’s journal club URL:https://phsites.technion.ac.il/strings/event/belals-journal-club/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\n

\nTime: Apr 26\, 2021 02:00 PM Jerusalem

\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)

\n Apr 2 6\, 2021 02:00 PM

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\n May 10\, 2021 02:00 PM

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\n May 31\, 2021 02:00 PM

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\nWeekly: https://technion.zoom.us/meeting/tJAvcu2trjsvGNR8 IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_ziGJYjY1v xDbcE3ULQRS7P7VxM6RAGdrkJoin Zoom Meeting

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\nMeeting ID: 942 5450 0520

\nFind your local number: https://technion.zoom.us/u/aoIxBM YZh\\n\\n \n END:VEVENT BEGIN:VEVENT UID:0uh8o75t7djsvu9hn0q1ruub9k@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Journal club CONTACT: DESCRIPTION:ayarom@technion.ac.il is inviting you to a scheduled Zoom meeti ng.\nTopic: Journal club\nTime: Apr 26\, 2021 02:00 PM Jerusalem\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)\n Apr 26 \, 2021 02:00 PM\n May 3\, 2021 02:00 PM\n May 10\, 2021 02: 00 PM\n May 17\, 2021 02:00 PM\n May 24\, 2021 02:00 PM\n May 31\, 2021 02:00 PM\n Jun 7\, 2021 02:00 PM\n Jun 14 \, 2021 02:00 PM\n Jun 21\, 2021 02:00 PM\n Jun 28\, 2021 02 :00 PM\nPlease download and import the following iCalendar (.ics) files to your calendar system.\nWeekly: https://technion.zoom.us/meeting/tJAvcu2tr jsvGNR8IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_zi GJYjY1vxDbcE3ULQRS7P7VxM6RAGdrk\nJoin Zoom Meeting\nhttps://technion.zoom. us/j/94254500520\nMeeting ID: 942 5450 0520\nOne tap mobile\n+97239786688\ ,\,94254500520# Israel\n+972553301762\,\,94254500520# Israel\nDial by your location\n +972 3 978 6688 Israel\n +972 55 330 1762 Israel \nMeeting ID: 942 5450 0520\nFind your local number: https://technion.zoom .us/u/aoIxBMYZh DTSTART;TZID=Asia/Jerusalem:20210628T140000 DTEND;TZID=Asia/Jerusalem:20210628T150000 LOCATION:Room 300 SEQUENCE:0 SUMMARY:Evyatar’s journal club URL:https://phsites.technion.ac.il/strings/event/evyatars-journal-club/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Title: Com plexity for CFTs in General Dimensions

Abstract: In this ta lk\, I will discuss circuit complexity for conformal field theory states i n arbitrary dimensions. The circuits start from a primary state and move a long a unitary representation of the Lorentzian conformal group. I will co nsider different choices of distance functions and explain how they can be understood in terms of the geometry of coadjoint orbits of the conformal group. This analysis will highlight a connection between the coadjoint orb its of the conformal group and timelike geodesics in anti-de Sitter spacet imes\, with interesting implications regarding the holographic complexity proposals. This is based on a work with Nicolas Chagnet\, Jan de Boer and Claire Zukowski.\\n\\n ayarom@techni on.ac.il is inviting you to a scheduled Zoom meeting.

\n

\nTime: Apr 26\, 2021 02:00 PM Jerusalem

\n Every week on Mon\, until Jun 28\, 2021\, 10 occurrence(s)

\n Apr 2 6\, 2021 02:00 PM

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\nWeekly: https://technion.zoom.us/meeting/tJAvcu2trjsvGNR8 IYp58Cw-i7Sav_ibTsDj/ics?icsToken=98tyKuCsrD4uH9SVtRuHRowIAI_4LO_ziGJYjY1v xDbcE3ULQRS7P7VxM6RAGdrkJoin Zoom Meeting

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\nhttps://technion .zoom.us/j/94254500520

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\nMeeting ID: 942 5450 0520

\nFind your local number: https://technion.zoom.us/u/aoIxBM YZh\\n\\n Title: Emerge nt symmetries in 3d and compactification from 5d

\nAbstract: We stud y the phenomenon of symmetry enhancement in quantum field theories in thre e dimensions\, where the global symmetry of a model is larger in the IR th an in the UV. We focus on supersymmetric theories where the situation is m ore tractable\,and find an organizing principle for such enhancements in t he form of compactifications of 5d theories on Riemann surfaces with flux in their global symmetries. We illustrate this by considering the compacti fication of the so-called 5d Seiberg SCFTs on tori\,and obtain 3d theories with enhanced IR symmetries given by the 5d symmetry preserved by the cho sen flux.

\n END:VEVENT BEGIN:VEVENT UID:3ofpqh45bgr1ck28fotukfs9tn@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: The structure of the initial conditions of the universe \nAbstract: I will review what we know about the initial conditions of the universe from observations. Then\, I will explain how they arise within t he framework of inflation\, and describe recent progress in classifying (o r “bootstrapping”) the possible correlation functions between primordial f luctuations. Finally\, time permitting\, I will touch upon work in progres s trying to apply the bootstrap philosophy to more general cosmologies. DTSTART;TZID=Asia/Jerusalem:20211026T160000 DTEND;TZID=Asia/Jerusalem:20211026T170000 SEQUENCE:0 SUMMARY:Guilherme L. Pimentel URL:https://phsites.technion.ac.il/strings/event/guilherme-l-pimentel/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n Title: The st ructure of the initial conditions of the universe

\n END:VEVENT BEGIN:VEVENT UID:6f6jdpqcccuv4d9117vdr5uoul@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Holography of Chronology Protection\nAbstract: After an introduction to time-machine spacetimes and simple models of them\, I will discuss recent work with M. Tomasevic where we use holography to study qu antum effects when closed timelike curves (CTCs) are developed. We address the question of whether it is possible to send a signal across the chrono logy horizon\, passing into the region where CTCs are present. We find tha t the self-interaction of quantum fields manages to banish the passage of field excitations into the non-chronal region. Going further\, we compute the gravitational backreaction of the quantum fields\, and show that the n ull chronology horizon turns into a strong\, spacelike curvature singulari ty. This is one of the few controlled\, explicit examples where we can see quantum effects change a Cauchy horizon into a spacelike singularity. DTSTART;TZID=Asia/Jerusalem:20211109T160000 DTEND;TZID=Asia/Jerusalem:20211109T170000 SEQUENCE:0 SUMMARY:Roberto Emparan URL:https://phsites.technion.ac.il/strings/event/roberto-emparan/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\nAbstract: I will review what we know about the initial conditions of the universe from obse rvations. Then\, I will explain how they arise within the framework of inf lation\, and describe recent progress in classifying (or “bootstrapping”) the possible correlation functions between primordial fluctuations. Finall y\, time permitting\, I will touch upon work in progress trying to apply t he bootstrap philosophy to more general cosmologies.\\n\\n Title: Hologr aphy of Chronology Protection

\n END:VEVENT BEGIN:VEVENT UID:42vfairg4is2jild3oquh9qi1v@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Mastering bounds on correlators\nAbstract: We discuss a new viewpoint onto the CFT landscape: bounds on values of CFT correlators. We show that such bounds can be obtained by constructing suitable ‘master functionals’. We present both numerical results for 3d CFTs as well as ex act results for correlators on the line. The latter follow from crossing s ymmetric dispersion relations. We briefly discuss how these may be used to study the Regge and flat space limits of CFT correlators. DTSTART;TZID=Asia/Jerusalem:20211116T160000 DTEND;TZID=Asia/Jerusalem:20211116T170000 SEQUENCE:0 SUMMARY:Miguel Paulos URL:https://phsites.technion.ac.il/strings/event/miguel-paulos/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\nAbstract: After an introduction to ti me-machine spacetimes and simple models of them\, I will discuss recent wo rk with M. Tomasevic where we use holography to study quantum effects when closed timelike curves (CTCs) are developed. We address the question of w hether it is possible to send a signal across the chronology horizon\, pas sing into the region where CTCs are present. We find that the self-interac tion of quantum fields manages to banish the passage of field excitations into the non-chronal region. Going further\, we compute the gravitational backreaction of the quantum fields\, and show that the null chronology hor izon turns into a strong\, spacelike curvature singularity. This is one of the few controlled\, explicit examples where we can see quantum effects c hange a Cauchy horizon into a spacelike singularity.\\n\\n Title: Master ing bounds on correlators

\n END:VEVENT BEGIN:VEVENT UID:5gh1sh5v7fs87ll6s3npk49mtr@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Multi-trace correlators in the SYK model and Non-geometr ic wormholes\nAbstract: We consider the global fluctuations in the density of states of the SYK model\, which are much larger than the standard RMT correlations. We provide a diagrammatic description of their leading and s ubleading behavior. In either case\, the new set of correlations are not a ssociated with (and are much larger than) the ones given by topological wo rmholes\, and hint towards the dual of a single realization. In particular \, we suggest that incorporating them in the gravity description requires the introduction of new\, lighter and lighter\, fields in the bulk with fl uctuating boundary couplings. DTSTART;TZID=Asia/Jerusalem:20211207T160000 DTEND;TZID=Asia/Jerusalem:20211207T170000 SEQUENCE:0 SUMMARY:Micha Berkooz URL:https://phsites.technion.ac.il/strings/event/micha-berkooz/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

\nAbstract: We discuss a new viewpoint onto the CFT landscape: bounds on values of CFT correlators. We show that such bounds can be obtained by constructing suitable ‘master functionals’. We present both numerical results for 3d CFTs as well as exact results for co rrelators on the line. The latter follow from crossing symmetric dispersio n relations. We briefly discuss how these may be used to study the Regge a nd flat space limits of CFT correlators.\\n\\n \n

Title:Multi-trace correlators in the SYK model and Non-geometric wormholes\n END:VEVENT BEGIN:VEVENT UID:73gsvb2rgrlfaeg2tm1mm2tfgt@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Bootstrapping N = 4 super-Yang-Mills on the conformal ma nifold\nAbstract: We study the N = 4 SYM stress tensor multiplet 4-point f unction for any value of the complexified coupling tau\, and in principle any gauge group (we focus on SU(2) and SU(3) for simplicity). By combining non-perturbative constraints from the numerical bootstrap with two exact constraints from supersymmetric localization\, we are able to compute uppe r bounds on low-lying CFT data (e.g. the Konishi) for any value of tau. Th ese upper bounds are very close to the 4-loop weak coupling predictions in the appropriate regime. We also give preliminary evidence that these uppe r bounds become small islands under reasonable assumptions\, in which case our method would provide a numerical solution to N = 4 SYM for any gauge group and tau. DTSTART;TZID=Asia/Jerusalem:20211214T103000 DTEND;TZID=Asia/Jerusalem:20211214T113000 SEQUENCE:0 SUMMARY:Shai Chester URL:https://phsites.technion.ac.il/strings/event/shai-chester-2/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Abstract:We consider the global fluctuations in the density o f states of the SYK model\, which are much larger than the standard RMT co rrelations. We provide a diagrammatic description of their leading and sub leading behavior. In either case\, the new set of correlations are not ass ociated with (and are much larger than) the ones given by topological worm holes\, and hint towards the dual of a single realization. In particular\, we suggest that incorporating them in the gravity description requires th e introduction of new\, lighter and lighter\, fields in the bulk with fluc tuating boundary couplings.\\n\\n

Title:< /b>BootstrappingN= 4 super-Yang-Mills on the conformal manif old\n\n END:VEVENT BEGIN:VEVENT UID:37igacc500r1snh9l0h8kds3eo@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Thermal Order in 3d\nAbstract: Our intuitive understand ing of thermodynamics suggests that broken global symmetries in the stable vacuum of a physical system\, get restored at high temperatures. We const ruct a unitary\, UV-complete 3d QFT that instead exhibits a spontaneous br eaking of continuous symmetries at all temperatures. Our model consists of two copies of the long-range vector model\, with O(m) and O(N−m) global s ymmetry groups\, perturbed by double-trace deformations. The model exhibit s a conformal manifold in the large rank limit\, that is lifted by 1/N cor rections. A certain class of IR fixed points are shown to undergo SSB at f inite temperature\, with the pattern persisting to all temperatures due to scale-invariance. We provide evidence that the models in question are uni tary\, UV-complete\, as well as invariant under conformal symmetry. Our wo rk adds to the growing list of models that display persistent symmetry bre aking (PSB)\, and discusses the necessary conditions for the models to dis play such a behaviour. DTSTART;TZID=Asia/Jerusalem:20211214T120000 DTEND;TZID=Asia/Jerusalem:20211214T130000 SEQUENCE:0 SUMMARY:Ritam Sinha URL:https://phsites.technion.ac.il/strings/event/ritam-sinha/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

We study theAbstract:N= 4 SYM stress t ensor multiplet 4-point function for any value of the complexified couplin g tau\, and in principle any gauge group (we focus on SU(2) and SU(3) for simplicity). By combining non-perturbative constraints from the numerical bootstrap with two exact constraints from supersymmetric localization\, we are able to compute upper bounds on low-lying CFT data (e.g. the Konishi) for any value of tau. These upper bounds are very close to the 4-loop wea k coupling predictions in the appropriate regime. We also give preliminary evidence that these upper bounds become small islands under reasonable as sumptions\, in which case our method would provide a numerical solution toN= 4 SYM for any gauge group and tau.\\n\\n \n

Title:Thermal Order in 3d\n END:VEVENT BEGIN:VEVENT UID:4keuie44dlurm5mr6hunnk1qup@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Conformal operators in SYK-like models and their numeric al effects\nAbstract: Quantum mechanical models with random interactions h ave an infinite number of bilinear operators\, the scaling dimensions of w hich can be computed explicitly in the large N limit. The lowest dimension operators play an important role in thermodynamical properties of these m odels and define the behavior of various correlation functions in the infr ared limit. In this talk I’ll show that some SYK-like models have operator s with unusual anomalous dimensions. I also demonstrate how they can be ob served in numerical computations.\nBased on works with Maria Tikhanovskaya \, Haoyu Guo and Subir Sachdev\nhttps://arxiv.org/abs/2010.09742https://ar xiv.org/abs/2012.14449 DTSTART;TZID=Asia/Jerusalem:20211221T160000 DTEND;TZID=Asia/Jerusalem:20211221T170000 SEQUENCE:0 SUMMARY:Gregory Tarnopolsky URL:https://phsites.technion.ac.il/strings/event/gregory-tarnopolsky/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Abstract:Our intuitive understanding of thermodynamics suggests that broken global symmetries in the stable va cuum of a physical system\, get restored at high temperatures. We construc t a unitary\, UV-complete 3d QFT that instead exhibits a spontaneous break ing of continuous symmetries at all temperatures. Our model consists of tw o copies of the long-range vector model\, with O(m) and O(N−m) global symm etry groups\, perturbed by double-trace deformations. The model exhibits a conformal manifold in the large rank limit\, that is lifted by 1/N correc tions. A certain class of IR fixed points are shown to undergo SSB at fini te temperature\, with the pattern persisting to all temperatures due to sc ale-invariance. We provide evidence that the models in question are unitar y\, UV-complete\, as well as invariant under conformal symmetry. Our work adds to the growing list of models that display persistent symmetry breaki ng (PSB)\, and discusses the necessary conditions for the models to displa y such a behaviour.\\n\\n \n< p>

Title:Conformal operators in SYK-like models and their numerical effectsAbstract:Quantum mechanical models with random interactions have an infinite number of bilinear operators\, the scaling dimensions of whic h can be computed explicitly in the large N limit. The lowest dimension op erators play an important role in thermodynamical properties of these mode ls and define the behavior of various correlation functions in the infrare d limit. In this talk I’ll show that some SYK-like models have operators w ith unusual anomalous dimensions. I also demonstrate how they can be obser ved in numerical computations.\nBased on works with Maria Tikhanovs kaya\, Haoyu Guo and Subir Sachdev

\nhttps://arxiv.org/abs/2010.09742

\n END:VEVENT BEGIN:VEVENT UID:1vbmf67epgo4vko9kbjgb2jln3@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Magnetic Quivers\, Phase Diagrams\, and Physics at Stron gly Coupled Quantum Field Theories\nAbstract: Quiver gauge theories experi enced a breakthrough in activity through two important concepts\, called “ magnetic quivers” and “Hasse (phase) diagrams”. The first helps understand ing the physics of strongly coupled gauge theories and exotic theories wit h tensionless strings in 6d or with massless gauge instants in 5d. The sec ond gives an invaluable information about the phase structure of gauge the ories\, in analogy with phases of water. The talk will review these develo pments and explain their significance. DTSTART;TZID=Asia/Jerusalem:20211228T103000 DTEND;TZID=Asia/Jerusalem:20211228T113000 SEQUENCE:0 SUMMARY:Amihay Hanany URL:https://phsites.technion.ac.il/strings/event/amihay-hanany/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

https://arxiv.org/abs/2012.14449\\n\\n \n

Title:Magnetic Quivers\, Phase Diagrams\, and Physics at Strongly Coupled Quant um Field Theories\n END:VEVENT BEGIN:VEVENT UID:19o54hhpq3v3qvs18t8qu1dsfl@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Some aspects of line defects in d dimensions\nAbstract: We consider renormalization group flows on line defects in d dimensions. W e define a “defect entropy” and argue that it decreases monotonically duri ng RG flows. We apply this result to line defects which appear in condense d matter and high energy physics\, including magnetic (SPT) defects\, loca lized field defects\, and Wilson loops. In some of these cases we make som e new experimental predictions and in the case of Wilson lines we make som e comparisons with localization and holography. DTSTART;TZID=Asia/Jerusalem:20220104T103000 DTEND;TZID=Asia/Jerusalem:20220104T113000 SEQUENCE:0 SUMMARY:Zohar Komargodski URL:https://phsites.technion.ac.il/strings/event/zohar-komargodski-4/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Abstract:Quiver gauge theories experienc ed a breakthrough in activity through two important concepts\, called “mag netic quivers” and “Hasse (phase) diagrams”. The first helps understanding the physics of strongly coupled gauge theories and exotic theories with t ensionless strings in 6d or with massless gauge instants in 5d. The second gives an invaluable information about the phase structure of gauge theori es\, in analogy with phases of water. The talk will review these developme nts and explain their significance.\\n\\n \n

Some aspects of line defects in d dimensionsTitle:\n END:VEVENT BEGIN:VEVENT UID:6lrd9j4921jdgdg2jhng0e591i@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Automorphic Spectra and the Conformal Bootstrap\nAbstrac t: I will explain that the spectral geometry of hyperbolic manifolds provi des a remarkably faithful model of the modern conformal bootstrap. In part icular\, to each hyperbolic manifold\, one can associate a Hilbert space o f local operators\, which is a unitary representation of a conformal group . The scaling dimensions of the operators are related to the eigenvalues o f the Laplacian on the manifold. The operators satisfy an operator product expansion. Finally\, one can define their correlation functions and deriv e bootstrap equations constraining the spectrum. As an application\, I wil l use conformal bootstrap techniques to derive upper bounds on the lowest positive eigenvalue of the Laplacian on closed hyperbolic surfaces and 2-o rbifolds. In a number of notable cases\, the bounds are nearly saturated b y known surfaces and orbifolds. For instance\, the bound on all genus-2 su rfaces is λ1≤3.8388976481\, while the Bolza surface has λ1≈3.838887258. Th e talk will be based on https://arxiv.org/abs/2111.12716\, which is joint work with P. Kravchuk and S. Pal. DTSTART;TZID=Asia/Jerusalem:20220118T160000 DTEND;TZID=Asia/Jerusalem:20220118T170000 SEQUENCE:0 SUMMARY:Dalimil Mazac URL:https://phsites.technion.ac.il/strings/event/dalimil-mazac/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

We consider renormalization group flows on line defects in d di mensions. We define a “defect entropy” and argue that it decreases monoton ically during RG flows. We apply this result to line defects which appear in condensed matter and high energy physics\, including magnetic (SPT) def ects\, localized field defects\, and Wilson loops. In some of these cases we make some new experimental predictions and in the case of Wilson lines we make some comparisons with localization and holography.Abstrac t:\\n\\n \n

Title:Automorphic Spectra and the Conformal Bootstrap\n END:VEVENT BEGIN:VEVENT UID:3kuq9b42nicikfh28e1sh7v1gj@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Kramers-Wannier-like duality defects in (3+1)d gauge the ories\nAbstract: I will introduce a class of non-invertible topological de fects in (3+1)d gauge theories whose fusion rules are the higher-dimension al analogs of those of the Kramers-Wannier defect in the (1+1)d critical I sing model. As in the lower-dimensional case\, the presence of such non-in vertible defects implies self-duality under a particular gauging of the di screte (higher-form) symmetries. I will illustrate this by means of the ex ample of SO(3) Yang-Mills (YM) at θ=π\, as well as SU(2)N=4 SYM at τ=i. DTSTART;TZID=Asia/Jerusalem:20220125T160000 DTEND;TZID=Asia/Jerusalem:20220125T170000 SEQUENCE:0 SUMMARY:Justin Kaidi URL:https://phsites.technion.ac.il/strings/event/justin-kaidi/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Abstract:I will explain that the spectral geometry of hyperbolic manifolds provides a remarkably faithful model of the modern conformal bootstrap. In particu lar\, to each hyperbolic manifold\, one can associate a Hilbert space of l ocal operators\, which is a unitary representation of a conformal group. T he scaling dimensions of the operators are related to the eigenvalues of t he Laplacian on the manifold. The operators satisfy an operator product ex pansion. Finally\, one can define their correlation functions and derive b ootstrap equations constraining the spectrum. As an application\, I will u se conformal bootstrap techniques to derive upper bounds on the lowest pos itive eigenvalue of the Laplacian on closed hyperbolic surfaces and 2-orbi folds. In a number of notable cases\, the bounds are nearly saturated by k nown surfaces and orbifolds. For instance\, the bound on all genus-2 surfa ces is λ1≤3.8388976481\, while the Bolza surface has λ1≈3.838887258. The t alk will be based on https://ar xiv.org/abs/2111.12716\, which is joint work with P. Kravchuk and S. P al.\\n\\n \n

Title:Kramers-Wannier-like duality defects in (3+1)d gauge theories\n END:VEVENT BEGIN:VEVENT UID:2li38cs54alfu0vjju7tq7q3mi@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: O(N)\, Sp(2M)\, and OSp(1|2M) Models\nAbstract: The uppe r critical dimension of the O(N) vector model is well-known to be 4. In di mension 4-epsilon it is described by the Wilson-Fisher IR fixed point of t he O(N) invariant scalar field theory with a small positive quartic coupli ng. Above 4 dimensions\, this theory is non-renormalizable\, but in 4+epsi lon dimensions it formally has a UV fixed point at small negative coupling . For sufficiently large N\, its UV completion in 4 DTSTART;TZID=Asia/Jerusalem:20220308T160000 DTEND;TZID=Asia/Jerusalem:20220308T180000 SEQUENCE:0 SUMMARY:Igor Klebanov URL:https://phsites.technion.ac.il/strings/event/igor-klebanov/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Abstract:I will introduce a class of non-invertible topological defec ts in (3+1)d gauge theories whose fusion rules are the higher-dimensional analogs of those of the Kramers-Wannier defect in the (1+1)d critical Isin g model. As in the lower-dimensional case\, the presence of such non-inver tible defects implies self-duality under a particular gauging of the discr ete (higher-form) symmetries. I will illustrate this by means of the examp le of SO(3) Yang-Mills (YM) at θ=π\, as well as SU(2)N=4 SYM at τ=i.\\n\\n \n

Title:O(N)\, Sp(2M)\, and OSp(1|2M) Models

Abstract:The upper c ritical dimension of the O(N) vector model is well-known to be 4. In dimen sion 4-epsilon it is described by the Wilson-Fisher IR fixed point of the O(N) invariant scalar field theory with a small positive quartic coupling. Above 4 dimensions\, this theory is non-renormalizable\, but in 4+epsilon dimensions it formally has a UV fixed point at small negative coupling. F or sufficiently large N\, its UV completion in 4\n Replacing N of the scala r fields by 2M anticommuting scalars\, we find Sp(2M) invariant fixed poin ts with imaginary coupling constants in dimension 6-epsilon. In the specia l case M=1 the symmetry is enhanced to OSp(1|2)\, and we argue that this t heory describes the critical behavior of the zero-state Potts model\, or e quivalently the random spanning forests. We end by discussing the OSp(1|4) invariant fixed point of the field theory with quintic interactions. Its upper critical dimension is 10/3\, and the 10/3-epsilon expansion provides estimates of new critical exponents in d=3.

\n END:VEVENT BEGIN:VEVENT UID:0np8c5h85b6n7n7sfsei7ciusa@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: A new look at completeness and generalized symmetriesAbs tract: We describe a proposal for completeness in QFT. It asserts that the physical observable algebras produced by local degrees of freedom are the maximal ones compatible with causality. We elaborate on equivalent statem ents to this idea such as the non-existence of generalized symmetries and the uniqueness of the net of algebras. For non-complete theories\, we expl ain how the existence of generalized symmetries is unavoidable\, and furth er\, that they always come in dual pairs with precisely the same size”\, m easured by an algebraic index. Entropic order/disorder parameters can be d efined that sense the dual pairs of generalized symmetries and satisfy a “ certainty relation”. We briefly describe applications to understand the de nsity of charged states and to holography. DTSTART;TZID=Asia/Jerusalem:20220322T160000 DTEND;TZID=Asia/Jerusalem:20220322T170000 SEQUENCE:0 SUMMARY:Horacio Casini\, Instituto Balseiro\, Bariloche URL:https://phsites.technion.ac.il/strings/event/horacio-casini/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n

Tit le:A new look at completeness and generalized symmetries

Abstract:We describe a proposal for completene ss in QFT. It asserts that the physical observable algebras produced by lo cal degrees of freedom are the maximal ones compatible with causality. We elaborate on equivalent statements to this idea such as the non-existence of generalized symmetries and the uniqueness of the net of algebras. For n on-complete theories\, we explain how the existence of generalized symmetr ies is unavoidable\, and further\, that they always come in dual pairs wit h precisely the same size”\, measured by an algebraic index. Entropic orde r/disorder parameters can be defined that sense the dual pairs of generali zed symmetries and satisfy a “certainty relation”. We briefly describe app lications to understand the density of charged states and to holography.\n END:VEVENT BEGIN:VEVENT UID:2vqqg6jh6u9g27vh0i3qh0bu4u@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Exactly Marginal Deformations and their Supergravity Dua lsAbstract: We study the space of supersymmetric AdS5 solutions of type II B supergravity corresponding to the conformal manifold of the dual N = 1 c onformal field theories. We show that the background geometry naturally en codes a generalised holomorphic structure\, dual to the superpotential of the field theory\, with the existence of the full solution following from a continuity argument. In particular\, we address the long-standing proble m of finding the gravity dual of the generic N = 1 deformations of N = 4 s uper Yang-Mills: though we are not able to give it in a fully explicit for m\, we provide a proof-of-existence of the supergravity solution. Using th is formalism\, we derive a new result for the Hilbert series of the deform ed field theories. DTSTART;TZID=Asia/Jerusalem:20220329T160000 DTEND;TZID=Asia/Jerusalem:20220329T170000 SEQUENCE:0 SUMMARY:Anthony Ashmore\, U Chicago and Sorbonne URL:https://phsites.technion.ac.il/strings/event/anthony-ashmore-u-chicago- and-sorbonne/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\n \n END:VEVENT BEGIN:VEVENT UID:4gucj5um8kke25d4b07egikbhb@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Complexity=Anything?Abstract: Motivated by holographic c omplexity\, we examine a new class of gravitational observables in asympto tically AdS space associated with codimension-one slices or with codimensi on-zero regions. We argue that any of these observables is an equally via ble candidate as the extremal volume for a gravitational dual of complexit y. DTSTART;TZID=Asia/Jerusalem:20220426T160000 DTEND;TZID=Asia/Jerusalem:20220426T180000 SEQUENCE:0 SUMMARY:Rob Myers\, Perimeter Institute URL:https://phsites.technion.ac.il/strings/event/rob-myers-perimeter-instit ute/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Title:Exactly Marginal Deformations and their Supergravity Duals

Abstract:We study the space of supersymmetric AdS5 solut ions of type IIB supergravity corresponding to the conformal manifold of t he dual N = 1 conformal field theories. We show that the background geomet ry naturally encodes a generalised holomorphic structure\, dual to the sup erpotential of the field theory\, with the existence of the full solution following from a continuity argument. In particular\, we address the long- standing problem of finding the gravity dual of the generic N = 1 deformat ions of N = 4 super Yang-Mills: though we are not able to give it in a ful ly explicit form\, we provide a proof-of-existence of the supergravity sol ution. Using this formalism\, we derive a new result for the Hilbert serie s of the deformed field theories.\\n\\n \n END:VEVENT BEGIN:VEVENT UID:5he1400qvu6cr5a3jq6amtmoit@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Static Responses and Symmetries of Black HolesAbstract: I will discuss features of the static responses of black holes in General Relativity. In particular\, I will describe how black hole static response s are defined in point particle effective theory and will explain how the vanishing of black hole Love numbers is a consequence of symmetries of the wave equation in black hole backgrounds. DTSTART;TZID=Asia/Jerusalem:20220503T160000 DTEND;TZID=Asia/Jerusalem:20220503T170000 SEQUENCE:0 SUMMARY:Austin Joyce\, Chicago U. URL:https://phsites.technion.ac.il/strings/event/austin-joyce-chicago-u/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Title:Complexity=Anything?Abstract:Motivated b y holographic complexity\, we examine a new class of gravitational observa bles in asymptotically AdS space associated with codimension-one slices or with codimension-zero regions. We argue that any of these observables is an equally viable candidate as the extremal volume for a gravitational du al of complexity.\\n\\n \n END:VEVENT BEGIN:VEVENT UID:21i5j9k3d44ju1q4qf0nk06n89@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Line Operators in Chern-Simons-Matter Theories and Boson ization in Three DimensionsAbstract: We study Chern-Simons theories at lar ge N with either bosonic or fermionic matter in the fundamental representa tion. The most fundamental operators in these theories are mesonic line op erators\, the simplest example being Wilson lines ending on fundamentals. We classify the conformal line operators along an arbitrary smooth path as well as the spectrum of conformal dimensions and transverse spins of thei r boundary operators at finite ‘t Hooft coupling. These line operators are shown to satisfy first-order chiral evolution equations\, in which a smoo th variation of the path is given by a factorized product of two line oper ators. We argue that this equation together with the spectrum of boundary operators are sufficient to uniquely determine the expectation values of t hese operators. We demonstrate this by bootstrapping the two-point functio n of the displacement operator on a straight line. We show that the line o perators in the theory of bosons and the theory of fermions satisfy the sa me evolution equation and have the same spectrum of boundary operators. DTSTART;TZID=Asia/Jerusalem:20220517T103000 DTEND;TZID=Asia/Jerusalem:20220517T113000 SEQUENCE:0 SUMMARY:Amit Sever\, TAU URL:https://phsites.technion.ac.il/strings/event/amit-sever-tau/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Title:Static Responses and Symmetries of Black Holes< br />Abstract:I will discuss features of the static responses of black holes in General Relativity. In particular\, I will des cribe how black hole static responses are defined in point particle effect ive theory and will explain how the vanishing of black hole Love numbers i s a consequence of symmetries of the wave equation in black hole backgroun ds.\\n\\n \n END:VEVENT BEGIN:VEVENT UID:09mfcnh0dv6jkv944dbe3ns35g@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: String stars in anti de Sitter spaceAbstract: We study t he ‘string star’ saddle\, also known as the Horowitz-Polchinski solution\, in the middle of d+1 dimensional thermal AdS space (d>2). We show that th ere’s a regime of temperatures in which the saddle is very similar to the flat space solution found by Horowitz and Polchinski. This saddle is hypot hetically connected at lower temperatures to the small AdS black hole sadd le. We also study\, numerically and analytically\, how the solutions are c hanged due to the AdS geometry for higher temperatures. Specifically\, we describe how the solution joins with the thermal gas phase\, and find the leading correction to the Hagedorn temperature due to the AdS curvature. F inally\, we study the thermodynamic instabilities of the solution and argu e for a Gregory-Laflamme-like instability whenever extra dimensions are pr esent at the AdS curvature scale. DTSTART;TZID=Asia/Jerusalem:20220517T120000 DTEND;TZID=Asia/Jerusalem:20220517T130000 SEQUENCE:0 SUMMARY:Erez Urbach\, WIS URL:https://phsites.technion.ac.il/strings/event/erez-urbach-wis/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Title:Line Operators in Chern-Simons-Matter Theories and Bosonization in Three DimensionsAbstract:We study Chern-Simons theories at large N with either bosonic or fermionic matter in the fundame ntal representation. The most fundamental operators in these theories are mesonic line operators\, the simplest example being Wilson lines ending on fundamentals. We classify the conformal line operators along an arbitrary smooth path as well as the spectrum of conformal dimensions and transvers e spins of their boundary operators at finite ‘t Hooft coupling. These lin e operators are shown to satisfy first-order chiral evolution equations\, in which a smooth variation of the path is given by a factorized product o f two line operators. We argue that this equation together with the spectr um of boundary operators are sufficient to uniquely determine the expectat ion values of these operators. We demonstrate this by bootstrapping the tw o-point function of the displacement operator on a straight line. We show that the line operators in the theory of bosons and the theory of fermions satisfy the same evolution equation and have the same spectrum of boundar y operators.\\n\\n \n END:VEVENT BEGIN:VEVENT UID:2oaeeatdgsonq81mjbln25d66t@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Love and Naturalness\nAbstract: It has been known for a decade that black holes are the most rigid objects in the universe: their tidal deformations (Love numbers) vanish identically in general relativity in four dimensions. This has represented a naturalness problem in the con text of classical worldline effective field theory. In my talk I will pres ent a new symmetry of general relativity (Love symmetry) that resolves thi s naturalness paradox. I will show that perturbations of rotating black ho les enjoy an SL(2\,R) symmetry in the suitable defined near zone approxima tion. This symmetry\, while approximate in general\, in fact yields exact results about static tidal deformations. This symmetry also implies that g eneric regular black hole perturbations form infinite-dimensional SL(2\,R) representations\, and in some special cases these are highest weight repr esentations. It is the structure of these highest weight representations t hat forces the Love numbers to vanish. All other facts about Love numbers\ , including their puzzling behaviour for higher dimensional black holes\, also acquire an elegant explanation in terms of SL(2\,R) representation th eory. DTSTART;TZID=Asia/Jerusalem:20220531T160000 DTEND;TZID=Asia/Jerusalem:20220531T180000 SEQUENCE:0 SUMMARY:Mikhail Ivanov\, IAS URL:https://phsites.technion.ac.il/strings/event/mikhail-ivanov-ias/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Title:String stars in anti de Sitter spaceAbstract:We study the ‘string star’ saddle\, also known as the Horowitz-Polchi nski solution\, in the middle of d+1 dimensional thermal AdS space (d>2). We show that there’s a regime of temperatures in which the saddle is very similar to the flat space solution found by Horowitz and Polchinski. This saddle is hypothetically connected at lower temperatures to the small AdS black hole saddle. We also study\, numerically and analytically\, how the solutions are changed due to the AdS geometry for higher temperatures. Spe cifically\, we describe how the solution joins with the thermal gas phase\ , and find the leading correction to the Hagedorn temperature due to the A dS curvature. Finally\, we study the thermodynamic instabilities of the so lution and argue for a Gregory-Laflamme-like instability whenever extra di mensions are present at the AdS curvature scale.\\n\\n \n

Title:Love and Naturalness\n END:VEVENT BEGIN:VEVENT UID:2vsjn8ct96mod20sptms4opffm@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Fracton-Elasticity Duality and Dipole Gauge SymmetryAbst ract: The generalization of particle-vortex duality in 2+1 dimensions to elasticity introduces emergent tensor gauge fields coupled to immobile cha rges\, identified as fractons. We reformulate the duality in terms of ordi nary gauge fields and derive mobility restrictions from gauge invariance. DTSTART;TZID=Asia/Jerusalem:20220614T103000 DTEND;TZID=Asia/Jerusalem:20220614T113000 SEQUENCE:0 SUMMARY:Carlos Hoyos\, Oviedo U. URL:https://phsites.technion.ac.il/strings/event/carlos-hoyos-2/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Abstract:It has been known for a dec ade that black holes are the most rigid objects in the universe: their tid al deformations (Love numbers) vanish identically in general relativity in four dimensions. This has represented a naturalness problem in the contex t of classical worldline effective field theory. In my talk I will present a new symmetry of general relativity (Love symmetry) that resolves this n aturalness paradox. I will show that perturbations of rotating black holes enjoy an SL(2\,R) symmetry in the suitable defined near zone approximatio n. This symmetry\, while approximate in general\, in fact yields exact res ults about static tidal deformations. This symmetry also implies that gene ric regular black hole perturbations form infinite-dimensional SL(2\,R) re presentations\, and in some special cases these are highest weight represe ntations. It is the structure of these highest weight representations that forces the Love numbers to vanish. All other facts about Love numbers\, i ncluding their puzzling behaviour for higher dimensional black holes\, als o acquire an elegant explanation in terms of SL(2\,R) representation theor y.\\n\\n \n END:VEVENT BEGIN:VEVENT UID:0rpkfkrkhm9ld4ltbobiphe93j@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION:Title: Large-Twist Limit for Any Charged Operator in N=4 SYM\nA bstract: The fishnet theory was obtained as a strongly twisted\, weakly co upled limit of N=4 SYM. Though still non-trivial\, it is much simpler than the original N=4 SYM theory. The appearance of integrability is better un derstood (at least for the spectrum)\, and the holographic dual was constr ucted from first principles. Both can be tied to the existence of an itera tive structure for some of the correlators. However\, the fishnet theory o nly contains two scalar fields\, and most of the operators of the original theory are now protected. In particular\, the gauge boson has completely decoupled. We argue that it is possible to devise a double-scaling limit f or any operator charged under the R-symmetry in N=4 SYM. We consider sever al examples that were protected in the fishnet theory\, including operator s containing the gauge boson. We show that the generic situation involves some type of mixing with other operators. This work is a first step toward s a systematic expansion of N=4 SYM around the large-twist limit. DTSTART;TZID=Asia/Jerusalem:20220614T120000 DTEND;TZID=Asia/Jerusalem:20220614T130000 SEQUENCE:0 SUMMARY:Ferrando Gwenael\, TAU URL:https://phsites.technion.ac.il/strings/event/ferrando-gwenael-tau/ X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n

Tit le:Fracton-Elasticity Duality and Dipole Gauge Symmetry< br />Abstract:The generalization of particle-vortex duality in 2+1 dimensions to elasticity introduces emergent tensor gauge fields coupled to immobile charges\, identified as fractons. We reformulate the duality in terms of ordinary gauge fields and derive mobility restrictions from ga uge invariance.\\n\\n \n

Title:Large-Twist Limit for Any Charged Operator in N=4 SYM\n END:VEVENT BEGIN:VEVENT UID:3rreo6qu0a6g2tli16ta9ujkth@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20221025T103000 DTEND;TZID=Asia/Jerusalem:20221025T113000 SEQUENCE:0 SUMMARY:Anatoly Dymarsky (Kentucky) URL:https://phsites.technion.ac.il/strings/event/anatoly-dymarsky-3/ END:VEVENT BEGIN:VEVENT UID:5e97eov263m1vaa31st69cscpd@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20221025T120000 DTEND;TZID=Asia/Jerusalem:20221025T130000 SEQUENCE:0 SUMMARY:Cobi Sonnenschein (TAU) URL:https://phsites.technion.ac.il/strings/event/cobi-sonnenschein/ END:VEVENT BEGIN:VEVENT UID:324fkptfd3euav3ft0l8cbkqtg@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20221206T103000 DTEND;TZID=Asia/Jerusalem:20221206T113000 SEQUENCE:0 SUMMARY:Luca Delacretaz (Chicago) URL:https://phsites.technion.ac.il/strings/event/luca-delacretaz-chicago/ END:VEVENT BEGIN:VEVENT UID:50un05d7rvg47e4lfcgqs0jkt5@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20221213T103000 DTEND;TZID=Asia/Jerusalem:20221213T113000 SEQUENCE:0 SUMMARY:Sergei Dubovsky (NYU) URL:https://phsites.technion.ac.il/strings/event/sergei-dubovsky-nyu/ END:VEVENT BEGIN:VEVENT UID:19mnp7mpjsnci0o664vv8onuba@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20221213T120000 DTEND;TZID=Asia/Jerusalem:20221213T130000 SEQUENCE:0 SUMMARY:Suman Kundu (Weizmann) URL:https://phsites.technion.ac.il/strings/event/suman-kundu-weizmann/ END:VEVENT BEGIN:VEVENT UID:26t0fgfa0q4rc6akj68imabgd4@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20230110T103000 DTEND;TZID=Asia/Jerusalem:20230110T113000 SEQUENCE:0 SUMMARY:Diego Rodriguez-Gomez (Oviedo) URL:https://phsites.technion.ac.il/strings/event/diego-rodriguez-gomez-ovie do/ END:VEVENT BEGIN:VEVENT UID:4pdhtb7k6vp6ia7sa5ovj467b0@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20230117T103000 DTEND;TZID=Asia/Jerusalem:20230117T113000 SEQUENCE:0 SUMMARY:Gabriel Cuomo (SCGP) URL:https://phsites.technion.ac.il/strings/event/gabriel-cuomo-scgp/ END:VEVENT BEGIN:VEVENT UID:3470duqh1okm4cd5s66e1vfjie@google.com DTSTAMP:20220929T034849Z CATEGORIES;LANGUAGE=en-US:Neve Shalom CONTACT: DESCRIPTION: DTSTART;TZID=Asia/Jerusalem:20230117T120000 DTEND;TZID=Asia/Jerusalem:20230117T130000 SEQUENCE:0 SUMMARY:Behzat Ergun (Technion) URL:https://phsites.technion.ac.il/strings/event/behzat-ergun-technion/ END:VEVENT END:VCALENDAR

Abstract :The fishnet theory was obtained as a strongly twisted\, weakly coupl ed limit of N=4 SYM. Though still non-trivial\, it is much simpler than th e original N=4 SYM theory. The appearance of integrability is better under stood (at least for the spectrum)\, and the holographic dual was construct ed from first principles. Both can be tied to the existence of an iterativ e structure for some of the correlators. However\, the fishnet theory only contains two scalar fields\, and most of the operators of the original th eory are now protected. In particular\, the gauge boson has completely dec oupled. We argue that it is possible to devise a double-scaling limit for any operator charged under the R-symmetry in N=4 SYM. We consider several examples that were protected in the fishnet theory\, including operators c ontaining the gauge boson. We show that the generic situation involves som e type of mixing with other operators. This work is a first step towards a systematic expansion of N=4 SYM around the large-twist limit.