Neutron-proton mass difference in isospin asymmetric nuclear matter

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.

11 pages, 6 figures; some new references added

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• Dirac-Brueckner-Hartree-Fock calculations for isospin asymmetric nuclear matter based on improved approximation schemes
• Systematic calculation of s-wave pion and kaon self-energies in asymmetric nuclear matter
• The Nolen-Schiffer anomaly and isospin symmetry breaking in nuclear matter
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Cited by in corpus (12)

• Nucleon Effective Masses in Neutron-Rich Matter
• Isospin splitting of nucleon effective mass from giant resonances in ${}^{208}$Pb
• Revisit of the neutron/proton ratio puzzle in intermediate-energy heavy-ion collisions
• Neutron-proton mass difference in finite nuclei and the Nolen-Schiffer anomaly
• Baryon chemical potential and in-medium properties of BPS skyrmions
• Neutron-proton effective mass splitting in neutron-rich matter
• Binding energy per nucleon and hadron properties in nuclear matter
• In-medium modified $\pi$-$\rho$-$\omega$ mesonic Lagrangian and properties of nuclear matter
• Constraining neutron-proton effective mass splitting through nuclear giant dipole resonance within transport approach
• The $\eta$ decay into 3$\pi$ in asymmetric nuclear medium
• Decomposition of EOS of Asymmetric Nuclear Matter into Different Spin-isospin Channels
• Single particle potentials of asymmetric nuclear matter in different spin-isospin channels