Uptunneling to de Sitter Speaker(s): Mehrdad Mirbabayi
Abstract:
Motivated by the question of how inflation started, we propose a Euclidean preparation of an asymptotically AdS2 spacetime that contains an inflating dS2 bubble. The setup can be embedded in a four dimensional theory with a Minkowski vacuum and a false vacuum. AdS2 times 2sphere approximate the near horizon geometry of a 4d nearextremal RN wormhole. Likewise, in the false vacuum the nearhorizon geometry of a nearextremal black hole is approximately dS2 times 2sphere. We interpret the Euclidean solution as describing the decay of an excitation inside the wormhole to a false vacuum bubble. The result is an inflating region inside a nontraversable asymptotically Minkowski wormhole. Date: 23/02/2021  11:00 am
Series: Cosmology & Gravitation
