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

Abstract

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.

22 pages, 2 figures, matches published version

References in corpus (6)

• N-flationary magnetic fields
• Interference Effects in Schwinger Vacuum Pair Production for Time-Dependent Laser Pulses
• Chiral Anomaly, Schwinger Effect, Euler-Heisenberg Lagrangian, and application to axion inflation
• Gravitational Waves and Dark Photon Dark Matter from Axion Rotations
• Pure Natural Inflation
• Axion assisted Schwinger effect

Cited by in corpus (4)

• Numerical study of the Schwinger effect in axion inflation
• Baryogenesis in $R^2$-Higgs Inflation: the Gravitational Connection
• Production and backreaction of massive fermions during axion inflation with non-Abelian gauge fields
• Transient phenomena in the axion assisted Schwinger effect