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

Abstract

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.

5 pages, 6 figures, presented at the International Conference "Critical Point and Onset of Deconfinement - CPOD 2011", Wuhan, November 7-11, 2011

Cited by in corpus (8)

• On the phase structure and thermodynamics of QCD
• Controlling the Sign Problem in Finite Density Quantum Field Theory
• The density in the density of states method
• Density of States FFA analysis of SU(3) lattice gauge theory at a finite density of color sources
• The QCD sign problem as a total derivative
• New DoS approaches to finite density lattice QCD
• Density of states approach for lattice gauge theory with a $\theta$-term
• Density of states techniques for lattice field theories using the functional fit approach (FFA)