Loops and polarization in strong-field QED

In a previous paper we showed how higher-order strong-field-QED processes in long laser pulses can be approximated by multiplying sequences of "strong-field Mueller matrices". We obtained expressions that are valid for arbitrary field shape and polarization. In this paper we derive practic...

Full description

Saved in:
Bibliographic Details
Published inarXiv.org
Main Author Torgrimsson, Greger
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 23.12.2020
Subjects
Particle spin
Physics - High Energy Physics - Phenomenology
Physics - High Energy Physics - Theory
Polarization (spin alignment)
Online AccessGet full text

Cover

More Information
Summary:In a previous paper we showed how higher-order strong-field-QED processes in long laser pulses can be approximated by multiplying sequences of "strong-field Mueller matrices". We obtained expressions that are valid for arbitrary field shape and polarization. In this paper we derive practical approximations of these Mueller matrices in the locally-constant- and the locally-monochromatic-field regimes. We allow for arbitrary laser polarization as well as arbitrarily polarized initial and final particles. The spin and polarization can also change due to loop contributions (the mass operator for electrons and the polarization operator for photons). We derive Mueller matrices for these as well.
ISSN:2331-8422
DOI:10.48550/arxiv.2012.12701