Dynamical Schwinger process in a bifrequent electric field of finite duration: survey on amplification

TL;DR

This paper investigates how a superimposed bifrequent electric field enhances electron-positron pair production via the dynamical Schwinger process, revealing a reduction in tunneling and multiphoton suppression effects.

Contribution

It provides a systematic analysis of pair production enhancement in bifrequent fields, highlighting the mechanisms behind suppression reduction in different regimes.

Findings

Enhanced pair production in bifrequent fields due to reduced suppression.

Systematic account of residual phase space distribution.

Explanation of enhancement via tunneling and multiphoton regime analysis.

Abstract

The electron-positron pair production due to the dynamical Schwinger process in a slowly oscillating strong electric field is enhanced by the superposition of a rapidly oscillating weaker electric field. A systematic account of the enhancement by the resulting bifrequent field is provided for the residual phase space distribution. The enhancement is explained by a severe reduction of the suppression in both the tunneling and multiphoton regimes.