Ginzburg-Landau approach to inhomogeneous chiral phases of QCD

摘要

We study the inhomogeneous chiral condensates in the proximity of the chiraltricritical point (TCP) of two-flavor QCD. Deriving the Ginzburg-Landau (GL)functional up to the eighth order in the order parameter and its spatialderivative, we explore off the TCP and find that critical curves are bent bynon-linear effects. In the newly extend GL coupling space, we find the TCPbeing realized as a multicritical point where five independent critical linesmeet up. We also present general analyses for the energies associated withseveral higher dimensional crystal structures.