Physics

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...

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

We develop an effective field theory for dissipative fluids which governs the dynamics of long-lived gapless modes associated with conserved quantities. The resulting theory gives an action formulation of fluctuating hydrodynamics which incorporates...

Abstract: Soft theorems for the scattering of low energy photons and gravitons and cosmological consistency relations on the squeezed-limit correlation functions are both understood to be consequences of invariance under large gauge transformations...

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...

We present a method in 2d CFT for calculating correlators in a state corresponding to the spherical collapse of a shell of matter in three dimensional quantum gravity. In field theory terms, we describe the equilibration process, from early times to...