Thermal Properties of a Hot Pion Gas beyond the Quasiparticle Approximation
Nuclear Theory
2016-09-08 v2
Abstract
Within the Matsubara formalism we derive expressions for the pion self-energy and the two-pion propagator in a hot pion gas. These quantities are used to selfconsistently calculate the in-medium amplitude beyond the quasiparticle approximation (QPA). The results are shown to differ significantly from QPA-based calculations. We also examine the impact of chiral constraints on the interaction in a chirally improved version of the J\"ulich model.
Cite
@article{arxiv.nucl-th/9502023,
title = {Thermal Properties of a Hot Pion Gas beyond the Quasiparticle Approximation},
author = {R. Rapp and J. Wambach},
journal= {arXiv preprint arXiv:nucl-th/9502023},
year = {2016}
}
Comments
12 pages LaTex (3 figures uuencoded)