Mode truncations and scattering in strong fields
Abstract
Truncating quantum field theories to a dominant mode offers a non-perturbative approach to their solution. We consider here the interaction of charged scalar matter with a single mode of the electromagnetic field. The implied breaking of explicit Lorentz invariance prompts us to compare instant-form quantisation and front-form, with the latter yielding significant simplifications when light-front zero modes are included. Using these field theory results we reassess the validity of existing first-quantised approaches to depletion effects in strong laser fields, and propose an alternative interpretation based on the dressing approach to QED and its infra-red structure.
Cite
@article{arxiv.1802.05933,
title = {Mode truncations and scattering in strong fields},
author = {Tom Heinzl and Anton Ilderton and Daniel Seipt},
journal= {arXiv preprint arXiv:1802.05933},
year = {2018}
}
Comments
18 pages, 1 pdf figure. Version 2: abbreviated presentation, results unchanged. Matches version to appear in Phys.Rev.D