Scattering amplitude and shift in self-energy in medium
High Energy Physics - Theory
2011-09-13 v1
Abstract
Two simple proofs are presented for the first order virial expansion of the self-energy of a particle moving through a medium, characterised by temperature and/or chemical potential(s). One is based on the virial expansion of the self-energy operator itself, while the other is on the analysis of its Feynman diagrams in configuration space.
Cite
@article{arxiv.hep-th/0108139,
title = {Scattering amplitude and shift in self-energy in medium},
author = {S. Mallik},
journal= {arXiv preprint arXiv:hep-th/0108139},
year = {2011}
}
Comments
6 pages, revtex, with 1 eps figure