Role of Strange Quark Mass in Pairing Phenomena in QCD

Abstract

We study the dynamical effect of strange quark mass as well as kinematical one on the color-flavor unlocking transition using a NJL model. Paying a special attention to the multiplicity of gap parameters, we derive an exact formula of the effective potential for 5-gap parameters. Based on this, we discuss that the unlocking transition might be of second order rather than of first order as is predicted by a simple kinematical criterion for the unlocking.

Comments: 10 pages, talk at the KIAS-APCTP International Symposium on Astro-Hadron Physics "Compact Stars: Quest for New States of Dense Matter"