Cosmic Evolution from Phase Transition of Three-Dimensional Flat Space
Cosmic Evolution from Phase Transition of Three-Dimensional Flat Space
Flat space cosmology spacetimes are exact time-dependent solutions of 3-dimensional gravity theories, such as Einstein gravity or topologically massive gravity. We exhibit a novel kind of phase transition between these cosmological spacetimes and the Minkowski vacuum. At sufficiently high temperature (rotating) hot flat space tunnels into a universe described by …