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arXiv · 1412.7442

Influence of interactions on particle production induced by time-varying mass terms

Seishi Enomoto·Olga Fuksińska·Zygmunt Lalak
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Abstract

We have investigated effects of interaction terms on non-perturbative particle production. It is well known that time-varying masses induce abundant particle production. In this paper we have shown that it is possible to induce particle production even if the mass term of a particle species is not varying in time. Such particles are produced through the interactions with other fields, whose mass terms are varying due to a time-dependent background. The necessary formalism has been introduced and analytic and numerical calculations have been performed in a simple but illustrative model. The rather general result is that the amount of produced particles without time-dependent masses can be comparable with the particle density produced directly by the varying background if the strength of interaction terms is reasonably large.

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Seishi Enomoto, Olga Fuksińska, Zygmunt Lalak. 2015-08-31. Influence of interactions on particle production induced by time-varying mass terms. https://doi.org/10.1007/jhep03(2015)113

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