ORCID

Abstract

The modeling of present and future ultra-intense lasers demands techniques that go beyond the standard diagrammatic approach to non-perturbatively fully capture the effects of strong fields. We illustrate the first-quantized path integral representation for strong-field quantum electrodynamics as a means of accessing the laser being treated as a background field, which is treated without recourse to perturbation theory. We examine an all-multiplicity construction for N-photon scattering processes for complex scalars and spinors, showing compact Master Formulae for tree-level scattering. Several background fields are considered, including plane waves, impulsive parallel propagation waves, non-null fields, and homogeneous fields (constant-crossed fields) with low-energy external photons.

Publication Date

2025-07-01

Publication Title

Physics of Plasmas

Volume

32

Issue

7

ISSN

1070-664X

Acceptance Date

2025-06-12

Deposit Date

2025-08-08

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