Archive of IAS Friday High Energy Theory Seminars

My talk will aim to be a friendly introduction for condensed matter friends, mathematicians, and QFT theorists alike --- I shall quickly review and warm up the use of higher symmetries and anomalies of gauge theories and condensed matter systems...

Charge transport near quantum critical points partly occur in phases with spontaneously broken symmetries. In an effective field theory approach, this transport can be described in a hydrodynamic theory with Goldstone modes encoding the broken...

I will discuss the contribution of higher-genus surfaces in JT gravity. In work with Saad and Shenker, we use Mirzakhani's recursion and work of Eynard and Orantin to show that these contributions exactly coincide with the genus expansion of a...

Every (2+1) dimensional lattice model with an energy gap is believed to be described by a topological quantum field theory (TQFT) in the low energy, long wavelength limit. What this means concretely is that every lattice model of this kind is...

Many experiments point to a significant transformation in the electronic state of the cuprate superconductors as their density is varied at very low temperature. The critical density is close to the “optimal” density where the superconductivity is...

The quartic coupling of the Standard Model Higgs nearly vanishes at a high energy scale. We show that this is explained by the parity symmetry and its spontaneous break down by the condensation of the parity partner of the Higgs. The parity can...

I’ll talk about the size-momentum correspondence and use it to study scrambling in a near-extremal charged black hole. It’s based on the paper arXiv:1804.04156v4.

I report on progress in formulating eleven-dimensional supergravity in a framework in which four supersymmetries are manifest.

I will show how the $T\bar T$ deformation of a two-dimensional QFT is related to coupling this QFT to a certain gravitational theory. This theory provides a natural set of clocks and rods which allow to define and compute the partition function on a...

It is recently recognized that the global symmetry of a theory can be a nontrivial mixture of 0-form and 1-form global symmetries, called 2-group symmetry. A place where 2-group symmetry ubiquitously exists is 6d N=(1,0) little string theories. In...