Quantum statistics effect in Schwinger pair production in short laser pulses

TL;DR

This paper explores how quantum statistics influence Schwinger pair production in ultra-short laser pulses, revealing extreme sensitivity to laser parameters and differences between fermions and bosons using quantum kinetic methods.

Contribution

It introduces a quantum kinetic approach to analyze quantum statistics effects in Schwinger pair production under ultra-short laser pulses.

Findings

Pair production is highly sensitive to laser frequency, pulse length, and phase.

Quantum statistics significantly affect the momentum spectra of produced particles.

Differences between fermions and bosons are demonstrated in the pair production process.

Abstract

We investigate non-perturbative pair production from vacuum (the Schwinger effect) in the focal region of two counter-propagating, ultra-short laser pulses with sub-cycle structure. We use the quantum kinetic formulation to calculate the momentum spectrum of created particles and show the extreme sensitivity to the laser frequency $\omega$, the pulse length $\tau$ and the carrier-envelope absolute phase $\phi$. We apply this formalism to both fermions and bosons to illustrate the influence of quantum statistics in this type of electric background field.