The zero-momentum limit of thermal green functions
High Energy Physics - Phenomenology
2009-09-25 v1
Abstract
The zero momentum limit of thermal self-energies calculated in perturbation theory depends on the order in which the time and the space components of the momentum are taken to zero. We show that this is an artifact of the perturbative calculation, and in fact the limit is well-defined when higher orders of the perturbation expansion are properly taken into account.
Cite
@article{arxiv.hep-ph/9402290,
title = {The zero-momentum limit of thermal green functions},
author = {J. F. Nieves and P. B. Pal},
journal= {arXiv preprint arXiv:hep-ph/9402290},
year = {2009}
}
Comments
11 pages, LaTeX, two figures available upon request, DOE-ER 40757-040