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arXiv · 2007.14124

Precise Calculation of the Decay Rate of False Vacuum with Multi-Field Bounce

So Chigusa·Takeo Moroi·Yutaro Shoji
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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.

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So Chigusa, Takeo Moroi, Yutaro Shoji. 2020-11-03. Precise Calculation of the Decay Rate of False Vacuum with Multi-Field Bounce. https://doi.org/10.1007/jhep11(2020)006

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