Archive of IAS Physics Group Meetings

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...

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...

I will review a few recent papers on 4d, N=3 superconformal field theories. References: arXiv:1512.03524arXiv:1512.06434arXiv:1602.08638

Abstract: I'll review a few recent papers that discuss the subject in the title, focusing on results based on AdS/CFT.References:https://arxiv.org/abs/1603.09745http://arxiv.org/pdf/1510.07911.pdfhttps://arxiv.org/abs/1509.06374For background, see:h...

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...

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...

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...

I will discuss the recent work on the quantum statistics of particle and loop-like string excitations in 3+1D.It is known that the quantum statistics of particles in 2+1D begets