Archive of IAS Friday High Energy Theory Seminars

Feb
19
2016

High Energy Theory Seminar

Multiloop Scattering Amplitudes in String and Field Theory
Carlos Mafra
1:45pm|Bloomberg Lecture Hall
I will review recent progress in the computation of multiloop scattering amplitudes using the pure spinor formalism of the superstring and make comments about future directions.
Feb
05
2016

High Energy Theory Seminar

Tree and One-Loop Amplitudes from Scattering Equations
Ellis Ye Yuan
1:45pm|Bloomberg Lecture Hall
Scattering equations are useful in organizing perturbative S-matrix of massless particles. Based on these equations tree-level amplitudes admit a compact expression in theories such as pure Yang-Mills, gravity, etc, where properties such as...
Jan
22
2016

High Energy Theory Seminar

Possibilities for the 750 GeV Excess
Matthew Low
1:45pm|Bloomberg Lecture Hall

In the 13 TeV LHC data both experiments have observed an excess of events in searches for new particles that decay to pairs of photons. Although the data is still inconclusive, this could be the first direct sign of new physics beyond the Standard...

Dec
04
2015

High Energy Theory Seminar

Bulk Energy Conditions from Relative Entropy and Comments on Bulk Reconstruction
Jennifer Lin
1:45pm|Bloomberg Lecture Hall
I will present results on how positivity properties of relative entropy in holographic CFT's give rise to energy conditions in asymptotically AdS spacetimes. This part will be a sequel to Nima Lashkari’s talk on 11/2. I will also comment on the...
Nov
20
2015

High Energy Theory Seminar

Entanglement, Spacetime, and Quantum Error Correction
Xi Dong
1:45pm|Bloomberg Lecture Hall

Over the last few years it has become clear that there is a deep connection between quantum entanglement and gravity. I will talk about two aspects of this connection. The first involves understanding quantum entanglement from a holographic...

Oct
23
2015

High Energy Theory Seminar

A Perfect Bounce
Neil Turok
1:45pm|Bloomberg Lecture Hall

We study the quantum cosmology of a universe with conformal matter. For homogeneous, isotropic metrics and matter, the quantum gravitational path integral may be performed exactly. The result is a "perfect bounce," in which the universe passes...

Sep
25
2015

High Energy Theory Seminar

Topologically Twisted Index and Casson-Walker Invariant
Pavel Putrov
1:45pm|Bloomberg Hall Physics Library
In the beginning of my talk I will review some general facts about 3d-3d correspondence and describe how to construct 3d theory T[M_3] associated to a Seifert 3-manifold M_3. Then I will show how one can calculate the Casson-Walker invariant of M_3...
Sep
11
2015

High Energy Theory Seminar

6d (2,0) Theories From the Ground Up
Clay Cordova
1:45pm|Bloomberg Lecture Hall

I will survey some properties of the 6d (2,0) theories that can be determined using only their symmetries. In particular, I will discuss their anomalies, moduli spaces, ADE classification, and the relation to 5d super Yang-Mills.

Physics