Ferromagnetism of quark liquid

Details Ferromagnetism of quark liquid Ferromagnetism of quark liquid

1999-10-25

arxiv.org/abs/hep-ph/9910470v1

Phys.Lett. B489 (2000) 280-286

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 2 postscript figures

Scientific paper

10.1016/S0370-2693(00)00927-8

Usually it is believed that the Hartree-Fock state of quark matter is a Fermi gas state with no polarisation of spins. We examine the possibility of the polarised quark liquid interacting with the one-gluon-exchange interaction. It is suggested that the Hartree-Fock state shows a spontaneous magnetic instability at low densities through the same mechanism as the appearance of ferromagnetism in electron gas. Metastability of the polarised quark liquid is also discussed.

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