带有2+1味道Wilson费米子的格点量子色动力学在有限温度、有限密度下的相变

利用格点规范理论研究了带有2＋1味道费米子的量子色动力学在有限密度及温度下的相变问题，研究了去禁闭相变与化学势和裸质量参数之间的依赖关系，并利用有限体积效应分析以及Monte Carlo模拟的演化序列所反映出的特点对相变的类型做了确认，给出了相结构图.关键词：格点量子色动力学相变

Phase transition of lattice quantum chromodynamics with 2+1 flavor fermions at finite temperature and finite density

Quantum chromodynamics with 2+1 flavor fermions at finite temperature and finite density was studied. Polyakov loop and chiral condensate were used to determine the dependence of the phase transition on the chemical potential and hop parameter. Finite volume scaling and Monte Carlo simulation were adopted to determine the type of phase transition. It was found that the transition between confined phase and deconfined phase varied from crossover to a first order one while the hop parameter κ₁ increased from a small value to nearly the chiral limit. The phase diagram was also presented.