Archive of IAS Friday High Energy Theory Seminars

I discuss a new family of four-dimensional CFTs, recently proposed by O.Gurdogan and myself, emerging as a double scaling limit of weakly coupled and strongly gamma-twisted N=4 SYM theory. These non-supersymmetric and non-unitary CFTs inherit the...

To what extent are deep learning models similar to complex physical systems? I will discuss analogies between aspects of deep learning, glassy systems, and Brownian motion. The results may help us to improve second-order optimization algorithms.

I will make some preliminary investigations to perturbativedynamics in AdS, more precisely the Mellin amplitudes associated to particle scattering, at loop level. With a focus on scalar effective theories, this analysis is fulfilled by introducing...

In my talk I will explicitly describe what topological termspreserving time-reversal symmetry one can introduce in 3+1d Yang-Mills theory. Classification of such terms corresponds to classification of SPTs via cobordisms proposed by Kapustin and...

Recent lattice results on $\theta$ at high temperatures call into question the standard semiclassical analysis of $\theta$-dependence at high temperatures. We examine arguments that there are large uncertainties in these computations, studying both...

Global symmetries in two dimensions are implemented by topological defect lines (TDLs). For continuous global symmetries, the TDLs are nothing but the Noether charges. However, there are TDLs that are not associated to any global symmetry, and can...

Noether's theorem is textbook material in quantum field theory, but among experts it has been known for a while that there are quantum field theories with continuous global symmetries which possess no conserved current. In this talk I will give a...

After a brief review (suitable for physicists) of computational genomics and complex traits, I describe recent progress in this area.Using methods from Compressed Sensing (L1-penalized regression; Donoho-Tanner phase transition with noise) and the...

We study the Eigenstate Thermalization Hypothesis (ETH) in chaotic conformal field theories (CFTs) of arbitrary dimensions. Assuming local ETH, we compute the reduced density matrix of a ball-shaped subsystem of finite size in the infinite volume...