Particle production related to the tunneling in false vacuum decay

TL;DR

This paper investigates particle production during false vacuum decay tunneling, demonstrating exponential suppression and ultraviolet finiteness of created particles in the thin-wall approximation.

Contribution

It provides a detailed analysis of particle production in false vacuum decay, highlighting suppression and finiteness properties not previously clarified.

Findings

Particle production is exponentially suppressed.

Number of created particles is ultraviolet finite.

Suppression persists even at high momenta.

Abstract

Motivated by the work of Mersini, the particle production related to the tunneling in false vacuum decay is carefully investigated in the thin-wall approximation. It is shown that in this case the particle production is exponentially suppressed even when the momentum is comparable to the curvature scale of the bubble. The number of created particles is ultraviolet finite.