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Interplay between spin polarization and color superconductivity in high density quark matter

Authors: Yasuhiko Tsue, João da Providência, Constança Providência, Masatoshi Yamamura, and Henrik Bohr

Ref.: Prog. Theor. Exp. Phys. 103D01 (2013)

Abstract: Here, it is suggested that a four-point interaction of the tensor type may lead to spin polarization in quark matter at high density. It is found that the two-flavor superconducting phase and the spin polarized phase correspond to distinct local minima of a certain generalized thermodynamical potential. It follows that a transition from one to the other phase occurs, passing through true minima with both a spin polarization and a color superconducting gap. It is shown that the quark spin polarized phase is realized at rather high density, while the two-flavor color superconducting phase is realized in a lower density region.

DOI: 10.1093/ptep/ptt076