Physics

There is an interesting duality in (2+1)d between theories of interacting bosons and U(1) gauge theories with bosonic charge, also known as charge-vortex duality. This duality is very useful for theoretically accessing various strongly interacting...

Engineering quantum field theories in String Theory in terms of branes is a powerful approach for understanding their dynamics. In this talk, I will present recent progress in the realization of 2d N=(0,2) gauge theories in terms of branes. I will...

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

I consider properties of the return amplitude $F(t)=\\langle\\Psi(t)|\\Psi(0)\\rangle$ following a quantum quench in a CFT on a finite manifold $M$ of dimension $d-1$ from a state $|\\Psi(0)\\rangle$ with area-law entanglement. In particular I'll...

I review the use of maximal unitarity at two loops, and how to phrase it in terms of multivariate contour integrals. I show how to use maximal unitarity to reconstruct the ABDK relation between one- and two-loop amplitudes with four and five...

Some papers:

We consider the question of whether the leading contribution to the entanglement entropy in holographic CFTs is truly given by the expectation value of a linear operator as is suggested by the Ryu-Takayanagi formula. We investigate this property by...

Applying conformal bootstrap techniques to 2d CFTs with an abelian current, we prove explicit bounds on the dimension of the lightest charged state in the theory.

I would like to discuss the problem of categorification of Chern-Simons partition function on closed 3-manifolds. Physics constructions of Khovanov knot homology, which categorifies Jones polynomial, suggests that there should be a generalization to...

In the first part we discuss the holographic entanglement entropy in AdS4/CFT3 for finite domains with generic shapes. For smooth shapes the constant term can be evaluated by employing a generalisation of the Willmore functional for two dimensional...