HEP Theory Journal Club

A new observable for holographic cosmology

Keivan Namjou

McGill University

The double-cone geometry is a saddle of the gravitational path integral, which explains the chaotic statistics of the spectrum of black hole microstates. This geometry is the usual AdS-Schwarzschild black hole, but with a periodic identification of the time coordinate; the resulting singularity at the black hole horizon is regulated by making the geometry slightly complex. In this talk, I will consider generalizations of the double-cone geometry, in three dimensions, which include the Lorentzian cosmology that sits between the event horizon and the black hole singularity, and discuss what we can learn about the observables in the dual conformal field theory from these geometries.