Phase structure of hot dense QCD by a histogram method

Understand

We study the phase structure of QCD at high temperature and density by lattice QCD simulations adopting a histogram method.

• The quark mass dependence and the chemical potential dependence of the nature of phase transition are investigated focusing on the probability distribution function (histogram).
• The shape of the distribution function changes with the quark mass and chemical potential.
• Through the shape of the distribution, the critical surface which separates the first order transition and crossover regions in the heavy quark region is determined for the (2+1)-flavor case.