Superadiabatic basis in cosmological particle production: Application to preheating

Yusuke Yamada*

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We discuss the adiabatic basis dependence of particle number in time-dependent backgrounds. In particular, we focus on preheating after inflation, and show that, for the optimal basis, the time dependence of the produced particle number can be well approximated by a simple connection formula, which can be obtained by analysing Stokes phenomenon in given backgrounds. As we show explicitly, the simple connection formula can describe various parameter regions such as narrow and broad resonance regime in a unified manner.

本文言語English
論文番号009
ジャーナルJournal of Cosmology and Astroparticle Physics
2021
9
DOI
出版ステータスPublished - 2021 9月
外部発表はい

ASJC Scopus subject areas

  • 天文学と天体物理学

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