Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series SEM-EXCEP
Subjects hep-th
Date Friday 29 September 2023
Time 14:30
Institute CPHT
Seminar Room Salle de conférences du LLR aile 5 (Ecole Polytechnique)
Speaker's Last Name Mukhanov
Speaker's First Name Slava
Speaker's Email Address
Speaker's Institution Ludwig-Maximilians-Universitat Munchen
Title False vacuum decay: thick wall approximation
Abstract I will consider the case where the potential for the scalar field is either unbounded from below or the second minimum corresponding to the true va- cuum has a depth exceeding the height of the potential barrier. In this case, the materialized bubbles dominating the vacuum decay naturally have a thick wall and the thin-wall approximation is not applicable. In such a case the main contribution to the action determining the decay probability of the false va- cuum comes from the part of the solution for which the potential term in the equation for instantons can be neglected compared to the friction term. I show that the developed approximation exactly reproduces the leading order results for the few known exactly solvable potentials.
arXiv Preprint Number

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