Monte Carlo simulations of the NJL model near the nonzero temperature phase transition

Details Monte Carlo simulations of the NJL model near the nonzero temperature phase transition Monte Carlo simulations of the NJL model near the nonzero temperature phase transition

2005-01-03

arxiv.org/abs/hep-lat/0501001v2

JHEP0501:057,2005

Physics

High Energy Physics

High Energy Physics - Lattice

18 pages, 6 figures

Scientific paper

10.1088/1126-6708/2005/01/057

We present results from numerical simulations of the Nambu-Jona-Lasinio model with an SU(2)xSU(2) chiral symmetry and N_c=4,8, and 16 quark colors at nonzero temperature. We performed the simulations by utilizing the hybrid Monte Carlo and hybrid Molecular Dynamics algorithms. We show that the model undergoes a second order phase transition. The critical exponents measured are consistent with the classical 3d O(4) universality class and hence in accordance with the dimensional reduction scenario. We also show that the Ginzburg region is suppressed by a factor of 1/N_c in accordance with previous analytical predictions.

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