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UID:2qk6uj03ncc8oesphcr9dvj2cn@google.com
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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\\n\\nTitle: 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
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