Precise Calculation of the Decay Rate of False Vacuum with Multi-Field Bounce
High Energy Physics - Phenomenology
2020-12-02 v2 High Energy Physics - Theory
Abstract
We study the decay rate of a false vacuum in gauge theory at the one-loop level. We pay particular attention to the case where the bounce consists of an arbitrary number of scalar fields. With a multi-field bounce, which has a curved trajectory in the field space, the mixing among the gauge fields and the scalar fields evolves along the path of the bounce in the field space and the one-loop calculation of the vacuum decay rate becomes complicated. We consider the one-loop contribution to the decay rate with an arbitrary choice of the gauge parameter, and obtain a gauge invariant expression of the vacuum decay rate. We also give proper treatments of gauge zero modes and renormalization.
Keywords
Cite
@article{arxiv.2007.14124,
title = {Precise Calculation of the Decay Rate of False Vacuum with Multi-Field Bounce},
author = {So Chigusa and Takeo Moroi and Yutaro Shoji},
journal= {arXiv preprint arXiv:2007.14124},
year = {2020}
}
Comments
68 pages, 1 figure; published version