Phase diagram of the three-dimensional NJL model

Details Phase diagram of the three-dimensional NJL model Phase diagram of the three-dimensional NJL model

2002-09-20

arxiv.org/abs/hep-lat/0209143v1

Eur.Phys.J. A18 (2003) 211-214

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, To appear in the proceedings of Conference on Quarks and Nuclear Physics (QNP 2002), Julich, Germany, 9-14 Jun 2002

Scientific paper

10.1140/epja/i2002-10300-9

With the exception of confinement the three-dimensional Nambu-Jona-Lasinio (NJL_3) model incorporates many of the essential properties of QCD. We discuss the critical properties of the model at nonzero temperature T and/or nonzero chemical potential $\mu$. We show that the universality class of the thermal transition is that of the d=2 classical spin model with the same symmetry. We provide evidence for the existence of a tricritical point in the ($\mu$,temperature) plane. We also discuss numerical results by Hands et al. which showed that the system is critical for $\mu>\mu_c$ and the diquark condensate is zero.

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