Spin Polarization versus Color-Flavor-Locking in High Density Quark   Matter
  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. 
Y. Tsue (Kochi Univ., Japan), J. da Providencia (Univ. de Coimbra,   Portugal), C. Providencia (Univ. de Coimbra, Portugal),...
hep-ph nucl-th