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hep-th2026
A positive definite formulation of vacuum decay with reduced symmetry
José R. Espinosa, Ryusuke Jinno, Thomas Konstandin +2
The Euclidean bounce for vacuum decay enjoys an symmetry that is lost in the presence of impurities than can catalyze the decay. We present a formulation for the calculation…
hep-th2025
Path to an exact WKB analysis of black hole quasinormal modes
Taiga Miyachi, Ryo Namba, Hidetoshi Omiya +1
We investigate black hole quasinormal modes using the exact WKB method. We perform an analytic continuation from the horizon to infinity along the positive real axis of the radial…
hep-th2023
Stochastic tunneling in de Sitter spacetime
Taiga Miyachi, Jiro Soda, Junsei Tokuda
Tunneling processes in de Sitter spacetime are studied by using the stochastic approach. We exploit the Martin-Siggia-Rose-Janssen-de Dominicis (MSRJD) functional integral to obtai…