Phase diagram of QCD at finite temperature and chemical potential from lattice simulations with dynamical Wilson quarks

He-Sheng Chen, Xiang-Qian Luo
2005 Physical Review D  
We present the first results for lattice QCD at finite temperature T and chemical potential μ with four flavors of Wilson quarks. The calculations are performed using the imaginary chemical potential method at κ=0, 0.001, 0.15, 0.165, 0.17 and 0.25, where κ is the hopping parameter, related to the bare quark mass m and lattice spacing a by κ=1/(2ma+8). Such a method allows us to do large scale Monte Carlo simulations at imaginary chemical potential μ=i μ_I. By analytic continuation of the data
more » ... uation of the data with μ_I < π T/3 to real values of the chemical potential, we expect at each κ∈ [0,κ_chiral], a transition line on the (μ, T) plane, in a region relevant to the search for quark gluon plasma in heavy-ion collision experiments. The transition is first order at small or large quark mass, and becomes a crossover at intermediate quark mass.
doi:10.1103/physrevd.72.034504 fatcat:klavym23d5frpjqqg3cllgks74