1209.1306 (Yuhei Iwata et al.)

Chiral multicritical points driven by isospin density in the
Ginzburg-Landau approach    [PDF]

Yuhei Iwata, Hiroaki Abuki, Katsuhiko Suzuki

We study how a chiral tricritical point (TCP) on QCD phase diagram is affected by the imbalance of up and down quark densities (isospin density), using the generalized Ginzburg-Landau (GL) approach. The resulting phase diagram near TCP shows a rich fine structure which includes inhomogeneities of both the chiral and the charged pion condensations. It turns out that the TCP splits into multicritical points.

View original: http://arxiv.org/abs/1209.1306