Archive of IAS Monday High Energy Theory Seminars

I will explain in examples how to incroporate the dependence on spin structure in fermionic lattice models. In two dimensions, I show to construct a spin-TQFT out of a superalgebra. In three dimensions, it turns out that fermionic lattice models are...

We discuss the exact determination of correlation functions of local operators in four-dimensional N=2 superconformal field theories.

Phases of quantum many particle systems can have low energy effective field theoretic descriptions in terms of gauge theories in their deconfined phase.
Such emergent gauge theories play a central role in modern theoretical work in condensed matter...

3d {\cal N} = 4 SCFTs have two protected topological sectors, one associated to the Higgs branch and one to the Coulomb branch. I will use supersymmetric localization to derive a Lagrangian description for the 1d sector associated with the Higgs...

States of quantum matter without quasiparticles can be more precisely characterized by their rapid approach to local thermal equilibrium: this is argued to happen in a shortest possible time of order (Planck’s constant)/((Boltmann’s constant)x...

I will describe a new approach to determining the bulk geometry from a dual field theory. This is based on a special class of spacelike cross-sections of the boundary called light-cone cuts. I will first show that the conformal metric in the bulk (i...

Little string theories are UV complete non-local 6D theories decoupled from gravity in which there is an intrinsic string scale. I will present a systematic approach to the construction of supersymmetric little string theories via F-theory. I will...

Moonshine in mathematics originally referred to unexpected connections between the modular J function and the representation theory of the Monster, the largest sporadic finite group. Recently new kinds of moonshine have been discovered connecting...

We develop an effective field theory for dissipative fluids which governs the dynamics of long-lived gapless modes associated with conserved quantities. The resulting theory gives an action formulation of fluctuating hydrodynamics which incorporates...

This talk will describe recent work on the classification of elliptic Calabi-Yau threefolds and fourfolds, and consequences for the physics of supersymmetric F-theory vacua. The mathematical theory of minimal surfaces and the physically-motivated...