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arXiv · 0705.1603

Neutron-proton mass difference in isospin asymmetric nuclear matter

Ulf-G. Meißner·A. M. Rakhimov·A. Wirzba·U. T. Yakhshiev
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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.

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Ulf-G. Meißner, A. M. Rakhimov, A. Wirzba, U. T. Yakhshiev. 2007-05-24. Neutron-proton mass difference in isospin asymmetric nuclear matter. https://doi.org/10.1140/epja/i2007-10390-9

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