Phase structures of strong coupling lattice QCD with overlap fermions at finite temperature and chemical potential

Details Phase structures of strong coupling lattice QCD with overlap fermions at finite temperature and chemical potential Phase structures of strong coupling lattice QCD with overlap fermions at finite temperature and chemical potential

2005-08-31

arxiv.org/abs/hep-lat/0508032v1

Mod.Phys.Lett.A22:537-546,2007

Physics

High Energy Physics

High Energy Physics - Lattice

Scientific paper

10.1142/S0217732307023110

We perform the first study of lattice QCD with overlap fermions at finite temperature $T$ and chemical potential $\mu$. We start from the Taylor expanded overlap fermion action, and derive in the strong coupling limit the effective free energy by mean field approximation. On the ($\mu,T$) plane and in the chiral limit, there is a tricritical point, separating the second order chiral phase transition line at small $\mu$ and large $T$, and first order chiral phase transition line at large $\mu$ and small $T$.

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