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在计算有限温度ＳＵ（２）格点规范模型Ｐｏｌｙａｋｏｖ线的过程中，考虑到变分 累积展开法中有限距离相互作用效应与 Ｍｏｎｔｅ Ｃａｒｌｏ中的有限体积效应的相似 性，采用了新的方法来确定相变点．与已有的方法以及 Ｍｏｎｔｅ Ｃａｒｌｏ模拟给出的 结果比较，新方法给出的结果更接近 Ｍｏｎｔｅ Ｃａｒｌｏ结果．
In the calculation of the Polyakov line for the finite-temperature SU (2) lattice point model, a new method is used to determine the similarity between the finite-distance interaction effects in the variational cumulative expansion method and the finite volume effect in Monte Carlo Phase change point. Compared with the existing methods and the results given by the Monte Carlo simulation, the new method gives the results closer to the Monte Carlo results.