title: New critical point induced by the axial anomaly in dense QCD.
abstract: We study the interplay between chiral and diquark condensates within the framework of the Ginzburg-Landau free energy, and classify possible phase structures of two and three-flavor massless QCD. The QCD axial anomaly acts as an external field applied to the chiral condensate in a color superconductor and leads to a crossover between the broken chiral symmetry and the color superconducting phase, and, in particular, to a new critical point in the QCD phase diagram.
authors.affiliation: Department of Physics, University of Tokyo, Japan.
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Hatsuda
authors.forename: Motoi
authors.initials: M
authors.lastname: Tachibana
authors.forename: Naoki
authors.initials: N
authors.lastname: Yamamoto
authors.forename: Gordon
authors.initials: G
authors.lastname: Baym