arXiv:1310.1388·v1·Nuclear Theory
Single particle potentials of asymmetric nuclear matter in different spin-isospin channels
Wei Zuo🇨🇳 · Sheng-Xin Gan🇨🇳 · Umberto Lombardo🇮🇹
Abstract
We investigate the neutron and proton single particle (s.p.) potentials of asymmetric nuclear matter and their isospin dependence in various spin-isospin channels within the framework of the Brueckner-Hartree-Fock approach. It is shown that in symmetric nuclear matter, the s.p. potentials in both the isospin-singlet T=0 channel and isospin-triplet T=1 channel are essentially attractive, and the magnitudes in the two different channels are roughly the same. In neutron-rich nuclear matter, the isospin-splitting of the proton and neutron s.p. potentials turns out to be mainly determined by the isospin-singlet T=0 channel contribution which becomes more attractive for proton and more repulsive for neutron at higher asymmetries.
Comments: 5 pages, 3 figures. arXiv admin note: substantial text overlap with arXiv:1310.1192