Speaker
Description
Title: Dynamical evolution of massive gravity: analytic and numerical progress
Abstract: Ghost free massive gravity is a very interesting and well motivated modification of Einstein's gravity that simply adds a mass to the graviton. While much studied, until recently there was little progress on understanding whether the theory behaves as GR does on scales well below the graviton mass, as must be the case for it to pass observational tests such as those at solar system scales. One of the main stumbling blocks was that gravitational collapse could not be studied as there was no practical dynamical formulation of the theory (ie. an analog of ADM for GR). I will review recent progress on a new dynamical formulation, its well posedness, and show results from computations of spherically symmetric gravitational collapse. The results are interesting and reveal a subtle theory that will require 3+1 numerical studies to properly test its viability.
