Color superconductivity versus pseudoscalar condensation in a three-flavor Nambu-Jona-Lasinio model

摘要

We calculate numerically the phase diagram of the three-flavor Nambu-Jona-Lasinio model at zero and finite temperature as a function of the up, down, and strange quark chemical potentials. We focus on the competition between pseudoscalar condensation and color superconductivity. We find that the two types of phases are separated by first-order transitions. © 2005 The American Physical Society.