Study of QCD thermodynamics at finite density by Taylor expansion

Details Study of QCD thermodynamics at finite density by Taylor expansion Study of QCD thermodynamics at finite density by Taylor expansion

2003-12-02

arxiv.org/abs/hep-lat/0312006v2

Prog.Theor.Phys.Suppl.153:118-126,2004

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages, 6 figures, ptptex, Talk at Finite Density QCD at Nara, Japan, 10-12 July 2003

Scientific paper

10.1143/PTPS.153.118

We discuss the phase structure and the equation of state for QCD at non-zero temperature and density. Derivatives of $\ln Z$ with respect to quark chemical potential $\mu_q$ up to fourth order are calculated for 2-flavor QCD, enabling estimates of the pressure, quark number density and associated susceptibilities as functions of $\mu_q$ via a Taylor series expansion. Also, the phase transition line for 2 and 3-flavor QCD and the critical endpoint in the $(T, \mu_q)$ plane are investigated in the low density regime.

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