Seminars

During the semester we have a high energy seminar and a lunch seminar. In addition to these two seminars we participate in a joint theoretical high energy theory seminar in Newe Shalom. The joint seminar takes place on Tuesdays from 10:30 until 13:30 and includes two talks and lunch. This seminar is attended by the high energy groups of all the Israeli institutions and usually attracts a crowd of roughly twenty participants.

Sun Mon Tue Wed Thu Fri Sat
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2
3
4
5
Vladimir Narovlansky (WIS) 10:30 am
Vladimir Narovlansky (WIS)
Dec 5 @ 10:30 am – 11:30 am
Any physical system is not pure, as there are always impurities as well as other external fields. These are collectively referred to as disorder. They might have significant implications for the long-distance behavior, and therefore[...]
Yasha Neiman (Okinawa) 12:00 pm
Yasha Neiman (Okinawa)
Dec 5 @ 12:00 pm – 1:00 pm
AdS/CFT relates two different local descriptions, each with its own gauge redundancies. Ideally, we would like to have a non-local gauge-invariant “third” description, which would underly both the bulk and boundary theories. I present a[...]
6
Shlomo 3:40 pm
Shlomo
Dec 6 @ 3:40 pm – 4:40 pm
 
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9
10
11
12
13
14
15
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19
Cobi Sonnenschein (TAU) 10:30 am
Cobi Sonnenschein (TAU)
Dec 19 @ 10:30 am – 11:30 am
 
Karthik Inbasekar (TAU) 12:00 pm
Karthik Inbasekar (TAU)
Dec 19 @ 12:00 pm – 1:00 pm
Chern-Simons theories coupled to matter have a wide variety of applications ranging from anyonic physics to quantum gravity via the AdS/CFT correspondence. These theories enjoy a strong-weak duality that has been tested to a very[...]
20
Raja 3:40 pm
Raja
Dec 20 @ 3:40 pm – 4:40 pm
 
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22
23
24
25
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27
Evgeny 3:40 pm
Evgeny
Dec 27 @ 3:40 pm – 4:40 pm
 
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31

Dec
19
Tue
Cobi Sonnenschein (TAU)
Dec 19 @ 10:30 am – 11:30 am
Karthik Inbasekar (TAU)
Dec 19 @ 12:00 pm – 1:00 pm
Chern-Simons theories coupled to matter have a wide variety of applications ranging from anyonic physics to quantum gravity via the AdS/CFT correspondence. These theories enjoy a strong-weak duality that has been tested to a very good accuracy via large N computations. Scattering amplitudes are some of the most basic observables in QFT’s. S matrices computed to all orders in the ‘t Hooft coupling serve as important testing grounds for the strong-weak duality. Although beginning with 4 point amplitudes this is doable, the complexity of the problem increases with the number of external legs. As a first step towards computing all loop arbitrary n point amplitudes, we address the problem of computing arbitrary n point tree level amplitudes. We show that BCFW recursion relations can be used to compute all tree level scattering amplitudes in terms of $2rightarrow2$ scattering amplitude in $U(N)$ ${mathcal N}=2$ Chern-Simons (CS) theory coupled to matter in fundamental representation. As a byproduct, we also obtain a recursion relation for the CS theory coupled to regular fermions, even though in this case standard BCFW deformations do not have a good asymptotic behavior. We then proceed to take the first steps towards all loop computations of arbitrary n point amplitudes. As a first step we explain the result of arXiv:1505.06571, where it was shown that the $2rightarrow 2$ scattering is tree level exact to all orders except in the anyonic channel, where it gets renormalized by a simple function of ‘t Hooft coupling. We show that tree level $2to 2$ scattering amplitudes in 3d ${cal N}=2$ Chern-Simons theory coupled to a fundamental chiral multiplet are dual superconformal invariant. We further show that the large $N$ all loop exact amplitude also has dual superconformal symmetry, which implies dual superconformal symmetry is all loop exact which is in contrast to other known highly supersymmetric examples such as ${cal N}=4$ SYM and ABJM where the dual superconformal symmetry is in general anomalous. The presence of superconformal and dual superconformal symmetry indicate the existence of a Yangian symmetry, further providing indications that the N=2 theory may be integrable.
Dec
20
Wed
Raja
Dec 20 @ 3:40 pm – 4:40 pm
Dec
27
Wed
Evgeny
Dec 27 @ 3:40 pm – 4:40 pm
Jan
3
Wed
Mangesh
Jan 3 @ 3:40 pm – 4:40 pm
Jan
10
Wed
Amos
Jan 10 @ 3:40 pm – 4:40 pm
Raja
Jan 10 @ 3:40 pm – 4:40 pm
Jan
16
Tue
Michal P. Heller (AEI)
Jan 16 @ 10:30 am – 11:30 am
Tom Rudelius (Harvard)
Jan 16 @ 12:00 pm – 1:00 pm
Jan
17
Wed
Orr
Jan 17 @ 3:40 pm – 4:40 pm

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