Physics

The extremal gravity proposal is a conjectured duality between pure gravity in three dimensions and a speculative set of 2d CFTS. I will discuss a computation of the number of black hole micro-states in these theories. This micro-state counting...

One can easily be frustrated by the tremendous redundancy in possible physical description. By this I mean the freedom to choose gauge, make field redefinitions, add any amount of auxiliary spectator matter, and the such. Happily we can exploit...

I will describe a method for determining the spins of framed BPS states supported on line defects in 4d N=2 theories of class S. Via the 2d-4d correspondence, this amounts to constructing quantum holonomies on a punctured Riemann surface. The main...

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...

N=8 supergravity is not renormalizable. This means the presense of power divergences in the amplitudes. There are also logarithmic divergences that multiply higher-dimensional counterterms. In all probability, the latter appear starting from the 7...

In this talk I will explore the constraints imposed by conformal invariance on defects in a conformal field theory. Correlation function of a conformal defect with a bulk local operator is fixed by conformal invariance up to an overall constant...

The SU(N)_1 WZW model is constructed on a n-sheeted branched torus, which allows for the investigation of the Renyi entropy for a single interval at finite temperature . Issues relevant for bose-fermi equivalence and Renyi entropy for theories with...

A global quench is an interesting setting where we can study thermalization of subsystems in a

Abstract:The replica trick plays an important role in several considerations of condensed matter physics and statistical physics. Recently, it has also played a role in several contexts in high energy theory and holography. We discuss some of the...