Many Polyakov loop models can be written in a dual formulation which is free of sign problem even when a non-vanishing baryon chemical potential is introduced in the action. Here, results of numerical simulations of a dual representation of one such effective Polyakov loop model at finite baryon density are presented. We compute various local observables such as energy density, baryon density, quark condensate and describe in details the phase diagram of the model. The regions of the first order phase transition and the crossover, as well as the line of the second order phase transition, are established. We also compute several correlation functions of the Polyakov loops.

许多Polyakov回路模型可以用对偶公式编写，即使动作中引入了不消失的重子化学势，也没有符号问题。在这里，给出了在有限重子密度下这种有效Polyakov环模型的双重表示的数值模拟结果。我们计算各种局部可观测值，例如能量密度，重子密度，夸克冷凝物，并详细描述模型的相图。建立一阶相变和分频的区域，以及二阶相变的线。我们还计算了Polyakov循环的几个相关函数。