The Phase Structure of Dense QCD from Chiral Models

Details The Phase Structure of Dense QCD from Chiral Models The Phase Structure of Dense QCD from Chiral Models

2009-10-22

arxiv.org/abs/0910.4375v1

Acta Phys.Polon.Supp.3:659-668,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 5 figures, to appear in the proceedings for Max Born & EMMI Symposium, July 9-11 2009, Wroclaw, Poland

Scientific paper

A new phase of dense QCD proposed in the limit of large number of colors, Quarkyonic Phase, is discussed in chiral approaches. The interplay between chiral symmetry breaking and confinement together with the $N_c$ dependence of the phase diagram are dealt with in the PNJL model. We also discuss a possible phase at finite density where chiral symmetry is spontaneously broken while its center remains unbroken. The quark number susceptibility exhibits a strong enhancement at the restoration point of the center symmetry rather than that of the chiral symmetry. This is reminiscent of the quarkyonic transition.

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