Numerical study of QCD phase diagram at high temperature and density by a histogram method

Details Numerical study of QCD phase diagram at high temperature and density by a histogram method Numerical study of QCD phase diagram at high temperature and density by a histogram method

2012-03-16

arxiv.org/abs/1203.3793v1

Physics

High Energy Physics

High Energy Physics - Lattice

5 pages, 6 figures, presented at the International Conference "Critical Point and Onset of Deconfinement - CPOD 2011", Wuhan,

Scientific paper

We study the QCD phase structure at high temperature and density adopting a histogram method. Because the quark determinant is complex at finite density, the Monte-Carlo method cannot be applied directly. We use a reweighting method and try to solve the problems which arise in the reweighting method, i.e. the sign problem and the overlap problem. We discuss the chemical potential dependence of the probability distribution function in the heavy quark mass region and examine the applicability of the approach in the light quark region.

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