Dilute Nuclear Matter in Chiral Perturbation Theory
Nuclear Theory
2009-11-10 v2
Abstract
We use chiral perturbation theory to compute the effective nucleon propagator in an expansion about low density in the chiral limit. We neglect four-nucleon interactions and focus on pion exchange. Evaluating the nucleon self-energy on its mass shell to leading order, we show that the effective nucleon mass increases by a small amount. We discuss the relevance of our results to the structure of compact stars.
Keywords
Cite
@article{arxiv.nucl-th/0303019,
title = {Dilute Nuclear Matter in Chiral Perturbation Theory},
author = {E. S. Fraga and Y. Hatta and R. D. Pisarski and J. Schaffner-Bielich},
journal= {arXiv preprint arXiv:nucl-th/0303019},
year = {2009}
}
Comments
Manuscript rewritten, especially conclusions about mass shifts; contact terms cannot be neglected. Computation unchanged