# Spin-states in multiphoton pair production for circularly polarized light

## TL;DR

This paper investigates how spin states influence multiphoton pair production in rotating electric fields, revealing the importance of angular momentum and spin considerations in understanding particle spectra.

## Contribution

It introduces a detailed analysis of spin effects in multiphoton pair production using quantum kinetic theory and photon absorption models, advancing understanding of angular momentum distribution.

## Key findings

- Spin states significantly affect particle spectra.
- Angular momentum distribution functions are computed numerically.
- Photon absorption models explain the spectra features.

## Abstract

Scalar and fermionic particle pair production in rotating electric fields is investigated in the nonperturbative multiphoton regime. Angular momentum distribution functions in above-threshold pair production processes are calculated numerically within quantum kinetic theory and discussed on the basis of a photon absorption model. The particle spectra can be understood if the spin states of the particle-antiparticle pair are taken into account.