Video Lectures

We study the N = 4 SYM stress tensor multiplet 4-point function for any value of the complexified coupling tau, and in principle any gauge group (we focus on SU(2) and SU(3) for simplicity). By combining non-perturbative constraints from the...

Near-Earth space has become increasingly valuable and its use for civil (e.g., scientific), commercial, and military purposes has grown enormously in recent years. This growth has been driven in part by a rapid decrease in space-launch costs, which...

The zeta-instanton equation (also known as Witten's d-bar equation) is a partial differential equation arising in two-dimensional supersymmetric field theory. In this talk I will review some of its properties and applications, from the...

Although today’s nuclear arsenals are not much in the news, they pose enormous risks for all humanity. Moreover, many treaties that have reduced the threat of nuclear weapons are now being abandoned, and enormous resources are scheduled to be spent...

 I will explain how the conformal bootstrap can be adapted to place rigorous bounds on the spectra of automorphic forms on locally symmetric spaces. A locally symmetric space is of the form H\G/K, where G is a non-compact semisimple Lie group, K the...

GW170817 heralded the opening of multimessenger astronomy. To predict or interpret gravitational wave sources, numerical modeling, in particular, numerical relativity is a unique and viable tool. In this talk, I will present the current status of...

Abstract 1: The axion, motivated as a solution to the strong CP problem, is also a viable dark matter candidate. If the initial axion field is not homogenized by inflation, it can naturally imprint large isocurvature fluctuations at extremely small...