Particle production induced by vacuum decay in real time dynamics

Understand

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.