Ward Identities in Non-equilibrium QED
High Energy Physics - Theory
2009-10-31 v2 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We verify the QED Ward identity for the two- and three -point functions at non-equilibrium in the HTL limit. We use the Keldysh formalism of real time finite temperature field theory. We obtain an identity of the same form as the Ward identity for a set of one loop self-energy and one loop three-point vertex diagrams which are constructed from HTL effective propagators and vertices.
Keywords
Cite
@article{arxiv.hep-th/9801103,
title = {Ward Identities in Non-equilibrium QED},
author = {M. E. Carrington and Hou Defu and Markus H. Thoma},
journal= {arXiv preprint arXiv:hep-th/9801103},
year = {2009}
}
Comments
19 pages, RevTex, 4 PostScript figures, revised version to be published in Phys. Rev. D