Three-Point Spectral Density in QED and the Ward Identity at Finite Temperature
High Energy Physics - Theory
2009-10-09 v2
Abstract
We derive the spectral representations of QED 3-point functions and then explicitly calculate the 3-point spectral densities in hard thermal loop approximation within the real time formalism. The Ward identities obeyed by the retarded and advanced 2- and 3-point functions are discussed. We compare our results with those for hot QCD .
Keywords
Cite
@article{arxiv.hep-th/9710090,
title = {Three-Point Spectral Density in QED and the Ward Identity at Finite Temperature},
author = {Hou Defu and U. Heinz},
journal= {arXiv preprint arXiv:hep-th/9710090},
year = {2009}
}
Comments
16 pages, 1 figure, some corrections in sec1, sec.5