It is shown that spin polarization with respect to each flavor in three-flavor quark matter occurs instead of the color-flavor locking at high baryon density by using the Nambu-Jona-Lasinio model with four-point tensor-type interaction. Also, it is indicated that the order of phase transition between the color-flavor locked phase and the spin polarized phase is the first order by means of the second order perturbation theory.
@article{arxiv.1409.6383,
title = {Spin Polarization versus Color-Flavor-Locking in High Density Quark Matter},
author = {Y. Tsue and J. da Providencia and C. Providencia and M. Yamamura and H. Bohr},
journal= {arXiv preprint arXiv:1409.6383},
year = {2015}
}