Magnetic properties and EoS of spin polarized isospin asymmetric nuclear matter

Bulk and single-particle properties of spin polarized isospin asymmetric nuclear matter are studied within the framework of the Brueckner-Hartree-Fock approximation. The single-particle potentials of neutrons and protons with spin up and down are determined for several values of the neutron and proton spin polarizations and the asymmetry parameter. An analytic parametrization of the total energy per particle as a function of these parameters is constructed, and employed to compute the magnetic susceptibility of nuclear matter. The results show no indication of a ferromagnetic transition at any density for any asymmetry of nuclear matter.