Archive of IAS Monday High Energy Theory Seminars

Mar
16
2020

High Energy Theory Seminar

Covariant Phase Space with Boundaries
Daniel Harlow
2:30pm|https://theias.zoom.us/j/434238729

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Feb
03
2020

High Energy Theory Seminar

X-ray Search for Axions from Nearby Isolated Neutron Stars
Ben Safdi
2:30pm|Bloomberg Lecture Hall (IAS)
Axions may be produced thermally inside the cores of neutron stars (NSs), escape the stars due to their weak interactions with matter, and subsequently convert into X-rays in the magnetic fields surrounding the NSs. I will describe a hard X-ray...
Dec
02
2019

High Energy Theory Seminar

Lorentz Symmetry Fractionalizations and Dualities in (2+1)d
Po-Shen Hsin
2:30pm|Bloomberg Lecture Hall
I will introduce a new discrete transformation in quantum field theory with Z2 1-form symmetry, with some applications to boson/fermion dualities in (2+1)d.
This is based on the work https://arxiv.org/abs/1909.07383with Shu-Heng Shao (IAS).
Nov
25
2019

High Energy Theory Seminar

Perspectives on the Generally-Relativistic Two-Body Problem from Double Copy & EFT
Radu Roiban
2:30pm|Bloomberg Lecture Hall
While the flat space two-body problem is integrable, the generally-relativistic one is not starting at the next-to-leading order.
In the appropriate classical limit, scattering amplitude-based techniques can yield the classical interaction of massive...
Nov
18
2019

High Energy Theory Seminar

TMF and SQFT
Theo Johnson-Freyd
2:30pm|Bloomberg Lecture Hall
I will describe my work, all joint with D. Gaiotto and some also joint with E. Witten, to understand the homotopy type of the space of (1+1)d N=(0,1) SQFTs --- what a condensed matter theorist would call "phases" of SQFTs. Our motivating hypothesis...
Oct
28
2019

High Energy Theory Seminar

Dynamical Constraints on RG Flows and Cosmology
Tom Hartman
2:30pm|Bloomberg Lecture Hall
I will discuss time-dependent probes of the renormalization group, and derive new constraints that govern the spread of local operators in holographic theories. The same methods lead to sum rules for inflationary correlators, relating observables...
Oct
14
2019

High Energy Theory Seminar

Entanglement Wedge Reconstruction and the Information Paradox
Geoff Penington and Geoff Penington
2:30pm|Bloomberg Lecture Hall
When absorbing boundary conditions are used to evaporate a black hole in AdS/CFT, we show that there is a phase transition in the location of the quantum Ryu-Takayanagi surface, at precisely the Page time. The new RT surface lies slightly inside the...
Sep
30
2019

High Energy Theory Seminar

General F-theory Models with SU(3) x SU(2) x U(1) / Z_6 Symmetry
Andrew Turner
2:30pm|Bloomberg Lecture Hall
We construct a general form for an F-theory Weierstrass model over any base giving a 6D or 4D supergravity theory with gauge group SU(3) x SU(2) x U(1) / Z_6 and associated generic matter. The concept of 'generic matter' can be rigorously defined in...
Sep
16
2019

High Energy Theory Seminar

The Holographic Dual of Strongly γ-deformed N=4 SYM Theory
Amit Sever
2:30pm|Bloomberg Lecture Hall
We present a first-principles derivation of a weak-strong duality between the four-dimensional fishnet theory in the planar limit and a discretized string-like model living in AdS5. At strong coupling, the dual description becomes classical and we...
Physics