Novel Lifshitz point for chiral transition in the magnetic field

Abstract

Based on the generalized Ginzburg–Landau theory, chiral phase transition is discussed in the presence of magnetic field. Considering the chiral density wave we show that chiral anomaly gives rise to an inhomogeneous chiral phase for nonzero quark-number chemical potential. Novel Lifshitz point appears on the vanishing chemical potential line, which may be directly explored by the lattice QCD simulation. Keywords: Inhomogeneous chiral phase, Chiral anomaly, QCD phase diagram, Lifshitz point