Physics

Abstract: The density of states of a unitary conformal field theory is known to have a universal behavior at high energy. In two dimensions, this behavior is described by the Cardy formula. If the theory has symmetry, it is interesting to understand...

Abstract: I will present general arguments, based on fundamental physics principles, as to why we should expect a significant, horizon scale, departure from semiclassical gravity inside astrophysical black holes. Then, I will present a simple model...

Abstract:  In this talk, I will discuss the 2d SU(N) gauge theory coupled to an adjoint Majorana fermion using two approaches.  First, I will describe the computation of the spectrum at finite N using Discretized Light-Cone Quantization.  Then, for...

Abstract: The count of black hole microstates is typically obtained from a supersymmetric index in weakly coupled string theory. I will discuss the index in the strongly coupled theory, as a functional integral in N=2 supergravity in asymptotically...

Abstract: I will review and revisit the quantum entropy of supersymmetric black holes, which is defined as a gravitational path integral in the near-horizon AdS2 region.

This has been studied in the past using different methods: loop calculations...

The CMS and ATLAS experiments at the CERN LHC have the unique potential to (possibly) directly produce dark matter in proton-proton collisions and study its properties. Many searches for dark matter have been carried out, mostly focused on Mono-X...

Abstract: I will briefly review the recent developments on hidden structures of (A)dS scattering amplitudes, known as the differential representation. This representation manifests the flat-space structure of (A)dS scattering, telling us that the (A...

Abstract: We add non-linear and state-dependent terms to the Hamiltonian of quantum field theory. The resulting low-energy theory, non-linear quantum mechanics, is causal, preserves probability and permits a consistent description of the process of...

Abstract: In four-dimensional asymptotically flat spacetimes, the infinite tower of soft graviton modes is known to generate a w(1+infinity) symmetry algebra at tree-level.  In this talk, I will review this symmetry and demonstrate that it acts non...

Abstract: I will review recent progress in understanding perturbative corrections to the large N limit of various observables in holographic 3d SCFTs. For supersymmetric observables, these corrections are obtained from supersymmetric localization...