Semiclassical analysis of axion-assisted and axion-driven pair production

被引：0

作者：

Hiroyuki Kitamoto

Masaki Yamada

机构：

[1] Kyoto University,Yukawa Institute for Theoretical Physics

[2] Tohoku University,Department of Physics

[3] Tohoku University,Frontier Research Institute for Interdisciplinary Sciences

来源：

Journal of High Energy Physics | / 2022卷

关键词：

Axions and ALPs; Cosmology of Theories BSM; Nonperturbative Effects;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We study the pair production of fermions in a time dependent axion background with and without an electric background. We construct the adiabatic mode functions which incorporate the gauge field and the axion velocity dependence of the dispersion relation. The semiclassical approach using this adiabatic basis shows two types of pair production. One is axion-assisted pair production: the presence of the axion velocity gives enhancement and interference effects on the pair production driven by the electric field. The other is axion-driven pair production: the time variation of the axion velocity causes the pair production even though the electric field is absent.

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