Phase diagram of Nambu-Jona-Lasinio model with dimensional regularization

Abstract

We investigate the phase diagram on temperature-chemical potential plane in the Nambu-Jona-Lasinio model with the dimensional regularization. While the structure of the resulting diagram shows resemblance to the one in the frequently used cutoff regularization, some results of our study indicate striking difference between these regularizations. The diagram in the dimensional regularization exhibits strong tendency of the first order phase transition.

9 pages, 9 figures

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• The QCD phase diagram at nonzero quark density
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• Nuclear chiral dynamics and phases of QCD
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