Loop spin effects in intense background fields
Date
2020-10-21Author
Ilderton, A
King, Ben
Tang, S
Subject
hep-ph hep-ph
Metadata
Show full item recordAbstract
Radiative and nonradiative electron spin-flip probabilities are analyzed in both plane wave and focused laser backgrounds. We provide a simple and physically transparent description of spin dynamics in plane waves, and demonstrate that there exists a kinematic regime in which the usual leading-order perturbative hierarchy of quantum electrodynamics is reversed, and nonradiative loop effects dominate over radiative tree-level spin flips. We show that while this loop dominance becomes suppressed in focused laser pulses due to a high sensitivity to field geometry, there is nevertheless a regime in which, in principle, loop effects on spin transitions can be discerned.
Description
10 pages, 6 figures
Collections
Publisher
American Physical Society
Journal
Physical Review D
Volume
102
Issue
7
Pagination
076013-
Publisher URL
Number
076013
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