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

Xiao-Lu Yu·Xiang-Qian Luo
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Abstract

We perform the first study of lattice QCD with overlap fermions at finite temperature $T$ and chemical potential $μ$. 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 ($μ,T$) plane and in the chiral limit, there is a tricritical point, separating the second order chiral phase transition line at small $μ$ and large $T$, and first order chiral phase transition line at large $μ$ and small $T$.

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Xiao-Lu Yu, Xiang-Qian Luo. 2005-08-31. Phase structures of strong coupling lattice QCD with overlap fermions at finite temperature and chemical potential. https://doi.org/10.1142/s0217732307023110

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