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

A. Rabhi, M. A. Pérez-García, C. Providência, and I. Vidaña
Phys. Rev. C 91, 045803 – Published 17 April 2015

Abstract

We study the effects 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 B10161017 G have 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>1016 G. We expect that neutron superfluidity in the crust will be affected by the presence of magnetic fields.

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  • Received 10 October 2014
  • Revised 25 February 2015

DOI:https://doi.org/10.1103/PhysRevC.91.045803

©2015 American Physical Society

Authors & Affiliations

A. Rabhi1,2,*, M. A. Pérez-García3,†, C. Providência1,‡, and I. Vidaña1,§

  • 1Centro de Física Computacional, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal
  • 2University of Tunis El-Manar, Unité de Recherche de Physique Nucléaire et des Hautes Énergies, Faculté des Sciences de Tunis, 2092 Tunis, Tunisia
  • 3Departamento de Física Fundamental and IUFFyM, Universidad de Salamanca, Salamanca, Spain

  • *rabhi@teor.fis.uc.pt
  • mperezga@usal.es
  • cp@teor.fis.uc.pt
  • §ividana@fis.uc.pt

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Vol. 91, Iss. 4 — April 2015

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