Particle production induced by vacuum decay in real time dynamics
arXiv:2006.10986 · doi:10.1103/PhysRevD.103.045006
Abstract
We discuss particle production associated with vacuum decay, which changes the mass of a scalar field coupled to a background field which induces the decay. By utilizing the Stokes phenomenon, we can optimally track the time-evolution of mode function and hence calculate particle production properly. In particular, we use real time formalisms for vacuum decay in Minkowski and de Sitter spacetime together with the Stokes phenomenon method. For each case, we consider the flyover vacuum decay model and stochastic inflation, respectively. Within the real time formalism, the particle production can be viewed as that caused by nontrivial external fields. This gives us a novel perspective of the real time formalism of vacuum decay.
arXiv comment24 pages, 4 figures, [v2] Major revision, [v3] Published in PRD
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- An analytic evaluation of gravitational particle production of fermions via Stokes phenomenon
- Superadiabatic basis in cosmological particle production: application to preheating
- Quintessence and false vacuum: Two sides of the same coin?