The Equation of State for Two Flavor QCD at Non-zero Chemical Potential
نویسنده
چکیده
We present results of a simulation of QCD on a 16 × 4 lattice with 2 continuum flavors of p4-improved staggered fermion with mass m/T = 0.4. Derivatives of the thermodynamic grand potential Ω with respect to quark chemical potential μq up to fourth order are calculated, enabling estimates of the pressure, quark number density and associated susceptibilities as functions of μq via Taylor series expansion. Discretisation effects associated with various staggered fermion formulations are discussed in some detail. In addition it is possible to estimate the radius of convergence of the expansion as a function of temperature. We also discuss the calculation of energy and entropy densities which are defined via mixed derivatives of Ω with respect to the bare couplings and quark masses.
منابع مشابه
Equation of state for two - flavor QCD with an improved Wilson quark action at non - zero chemical potential
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