Causal signal transmission by quantum fields. Phase-space approach to quantum electrodynamics

TL;DR

This paper extends phase-space methods to nonlinear quantum electrodynamics beyond the rotating wave approximation, providing a mostly classical perspective on radiation dynamics in quantum fields.

Contribution

It introduces a phase-space approach to nonlinear quantum electrodynamics that simplifies the understanding of radiation dynamics beyond common approximations.

Findings

Provides a classical-like description of quantum radiation fields.

Generalizes phase-space techniques to nonlinear regimes.

Offers new insights into quantum field interactions.

Abstract

Phase-space techniques are generalized to nonlinear quantum electrodynamics beyond the rotating wave approximation, resulting in an essentially classical picture of radiation dynamics.