Secularly growing loop corrections in strong electric fields
High Energy Physics - Theory
2015-06-19 v3 Other Condensed Matter
High Energy Physics - Phenomenology
Abstract
We calculate one--loop corrections to the vertexes and propagators of photons and charged particles in the strong electric field backgrounds. We use the Schwinger--Keldysh diagrammatic technique. We observe that photon's Keldysh propagator receives growing with time infrared contribution. As the result, loop corrections are not suppressed in comparison with tree--level contribution. This effect substantially changes the standard picture of the pair production. To sum up leading IR corrections from all loops we consider the infrared limit of the Dyson--Schwinger equations and reduce them to a single kinetic equation.
Keywords
Cite
@article{arxiv.1405.5285,
title = {Secularly growing loop corrections in strong electric fields},
author = {E. T. Akhmedov and N. Astrakhantsev and F. K. Popov},
journal= {arXiv preprint arXiv:1405.5285},
year = {2015}
}
Comments
16 pages, no figures; Minor corrections