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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:21020034  ( MP4 Medium Res , MP3 , PDF ) Which Format?
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 2-sphere approximate the near horizon geometry of a 4d near-extremal RN wormhole. Likewise, in the false vacuum the near-horizon geometry of a near-extremal black hole is approximately dS2 times 2-sphere. 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 non-traversable asymptotically Minkowski wormhole.

Date: 23/02/2021 - 11:00 am
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