The critical surface of the SU(3)_L x SU(3)_R chiral quark model at non-zero baryon density

Details The critical surface of the SU(3)_L x SU(3)_R chiral quark model at non-zero baryon density The critical surface of the SU(3)_L x SU(3)_R chiral quark model at non-zero baryon density

2006-11-15

arxiv.org/abs/hep-ph/0611208v1

Phys.Rev.D75:025015,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTeX4, 10 pages, 4 figures

Scientific paper

10.1103/PhysRevD.75.025015

The boundary of the first order chiral phase transition region is studied in the m_pi-m_K-mu_B space using the one-loop optimized perturbation theory for the resummation of the perturbative series. Chiral perturbation theory for mesons and baryons is used for the T=0 parametrization of the model. The surface of second order transition points bends with increasing mu_B towards the physical point of the m_pi-m_K mass plane allowing for the existence of the critical end point in the mu_B-T plane at the physical point. The location and scaling region of the CEP is explored.

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