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Ferromagnetism of Nuclear Matter in the Relativistic Approach

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arxiv nucl-th/0010018 v2 pith:7TJJ4P2J submitted 2000-10-05 nucl-th

Tomoyuki Maruyama , Toshitaka Tatsumi This is my paper · ORCID
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keywords interactionrelativisticapproachaxial-vectorferromagnetismholdsmatternuclear
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We study the spin-polarization mechanism in the highly dense nuclear matter with the relativistic mean-field approach. In the relativistic Hartree-Fock framework we find that there are two kinds of spin-spin interaction channels, which are the axial-vector and tensor exchange ones. If each interaction is strong and different sign, the system loses the spherical symmetry and holds the spin-polarization in the high-density region. When the axial-vector interaction is negative enough, the system holds ferromagnetism.

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  1. Ferromagnetic instabilities in quarkyonic matter

    nucl-th 2025-07 conditional novelty 6.0 of 10

    Quarkyonic neutron matter can turn ferromagnetic below about 5.5 n0, but only with a hand-chosen negative spin-spin interaction constant.

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