Dense nuclear matter and symmetry energy in strong magnetic fields
arXiv:1212.3659 · doi:10.1016/j.nuclphysa.2012.11.011
Abstract
The properties of nuclear matter in the presence of a strong magnetic field, including the density-dependent symmetry energy, the chemical composition and spin polarizations, are investigated in the framework of the relativistic mean field models FSU-Gold. The anomalous magnetic moments (AMM) of the particles and the nonlinear isoscalar-isovector coupling are included. It is found that the parabolic isospin-dependence of the energy per nucleon of asymmetric nuclear matter remains valid for values of the magnetic field below , G being the electron critical field. Accordingly, the symmetry energy can be obtained by the difference of the energy per nucleon in pure neutron matter and that in symmetric matter. The symmetry energy, which is enhanced by the presence of the magnetic field, significantly affects the chemical composition and the proton polarization. The effects of the AMM of each component on the energy per nucleon, symmetry energy, chemical composition and spin polarization are discussed in detail.
18 pages, 7 figures, to appear in Nucl. Phys. A
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Cited by in corpus (6)
- (In-)Significance of the Anomalous Magnetic Moment of Charged Fermions for the Equation of State of a Magnetized and Dense Medium
- Thermodynamics of Neutrons in a Magnetic Field and its Implications for Neutron Stars
- Anisotropic magnetized neutron star
- Modification of the masses of the lightest neutral mesons in a hadronic medium under an external magnetic field
- Neutron stars including the effects of chaotic magnetic fields and the anomalous magnetic moments
- Hot magnetized nuclear matter: Thermodynamic and Saturation Properties