In-Medium Effective Pion Mass from Heavy-Baryon Chiral Perturbation Theory
Nuclear Theory
2008-11-26 v3
Abstract
Using heavy-baryon chiral perturbation theory, we have calculated all the diagrams up to two-loop order which contribute to the S-wave pion self-energy in symmetric nuclear matter. Some subtleties related to the definition of pion fields are discussed. The in-medium pion mass is turned out to be increased by only (5 - 6) per cents in normal nuclear matter density, without any off-shell ambiguity.
Keywords
Cite
@article{arxiv.nucl-th/0101064,
title = {In-Medium Effective Pion Mass from Heavy-Baryon Chiral Perturbation Theory},
author = {Tae-Sun Park and Hong Jung and Dong-Pil Min},
journal= {arXiv preprint arXiv:nucl-th/0101064},
year = {2008}
}
Comments
9 pages with 3 eps figures