Physics

I will describe a proposal for computing the Schur limit of the superconformal index of four-dimensional N = 2 field theories, which counts local operators in the UV, from the spectrum of BPS particles on the Coulomb branch. This proposal can be...

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...

ADDED. Live stream of the LIGO press briefing. The live webcast is scheduled to begin at 1:15 EDT (10:15 am Pacific Daylight Time). The latest research in the effort to detect gravitational waves will be discussed in a press briefing at the 228th...

I review the on-shell approach to loop amplitudes, and its implementation in the BlackHat library. I present a selection of recent calculations done using the library. These include next-to-leading order calculations of electroweak vectors...

The goal of this discussion will be to first provide a broader picture and then to discuss the most recent work. I will review the general features of Low energy expansion of stringy amplitudes (tree level and one-loop) and it's relation to number...

I will discuss the discrete Liouville theory and its connection with cluster algebras, Teichmuller theory and supersymmetric gauge theories.References:The version of discrete Liouville I discuss has been formulated by many papers by Faddeev, Volkov...