Neutron-proton mass difference in isospin asymmetric nuclear matter
Nuclear Theory
2009-06-09 v2
Abstract
Isospin-breaking effects in the baryonic sector are studied in the framework of a medium-modified Skyrme model. The neutron-proton mass difference in infinite, asymmetric nuclear matter is discussed. In order to describe the influence of the nuclear environment on the skyrmions, we include energy-dependent charged and neutral pion optical potentials in the s- and p-wave channels. The present approach predicts that the neutron-proton mass difference is mainly dictated by its strong part and that it strongly decreases in neutron matter.
Keywords
Cite
@article{arxiv.0705.1603,
title = {Neutron-proton mass difference in isospin asymmetric nuclear matter},
author = {Ulf-G. Meißner and A. M. Rakhimov and A. Wirzba and U. T. Yakhshiev},
journal= {arXiv preprint arXiv:0705.1603},
year = {2009}
}
Comments
11 pages, 6 figures; some new references added