ORCID

Abstract

We perform a complete calculation of electron-seeded pair creation (the trident process) in a constant crossed electromagnetic background. Unlike earlier treatments, we include the interference between exchange diagrams. We find that this exchange interference can be written as a contribution solely to the one-step process, and for small quantum nonlinearity parameter is of the same order as other one-step terms. We find that the exchange interference further suppresses the one-step process in this parameter regime. Our findings further support the crucial assumption made in laser-plasma simulation codes that at high intensities, the trident process can be well approximated by the repeated iteration of the single-vertex subprocesses. The applicability of this assumption to higher-vertex processes has fundamental importance to the development of simulation capabilities.

DOI

10.1103/physrevd.98.016005

Publication Date

2018-01-01

Publication Title

Physical Review D

Volume

98

Issue

1

ISSN

2470-0010

Embargo Period

2023-03-01

Organisational Unit

School of Engineering, Computing and Mathematics

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