1 Department of Physics, Technical University of Denmark2 Biophysics and Fluids, Department of Physics, Technical University of Denmark3 University of Coimbra4 Kansai University5 University of Coimbra6 Kansai University
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.
Progress of Theoretical and Experimental Physics, 2013, Vol 2013, Issue 10