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Magnetic susceptibility and magnetization properties of asymmetric nuclear matter under a strong magnetic field

Authors: A. Rabhi, M. A. Pérez-García, C. Providência, I. Vidaña

Ref.: Phys. Rev. C 91, 045803 (2015)

Abstract: We study the effect of a strong magnetic field on the proton and neutron spin polarization and magnetic susceptibility of asymmetric nuclear matter within a relativistic mean-field approach. It is shown that magnetic fields B∼1016−1017 G have already noticeable effects on the range of densities of interest for the study of the crust of a neutron star. Although the proton susceptibility is larger for weaker fields, the neutron susceptibility becomes of the same order or even larger for small proton fractions and subsaturation densities for B>10^16 G. We expect that neutron superfluidity in the crust will be affected by the presence of magnetic fields.

DOI: 10.1103/PhysRevC.91.045803