NON-UNIFORM CHIRAL AND 2SC COLOR SUPERCONDUCTING PHASES, TAKING INTO ACCOUNT THE NONZERO CURRENT QUARK MASS
Abstract
We have shown that the possibility of the existence of the mixed phase of the non-uniform chiral (NCh) and the color superconducting (2SC) ground state depends significantly on the choice of the parameters and type of the regularization scheme. Our calculations indicate that irrespective of the choice of regularization type, in a moderate baryon density region, there is a local minimum of a system corresponding to the NCh/2SC related phase. In the 3d cutoff regularization scheme, the mixed region of the NCh and the 2SC phases exists for a broad set of NJL model parameters. However, in the Schwinger regularization scheme, if parameters are set to the vacuum values of fπ, mπ and 
, then the mixed region of the NCh and the 2SC phases does not exist.
