Ising模型集团大小对重正化结果影响的分析

The analysis of the influence of the group size to the result of renormalization group in ising model

以二维三角晶格为例选取包含9个晶格的晶胞为Kadanoff集团,通过重正化变换求出其临界点和临界指数并与三角晶格[1]、六角晶格[2]的结果作比较,比较的结果表明:选取更大的集团可以提高其计算精度。

Select enneahedral crystal lattice as Kadanoff group.The critical point and exponents are gained by renormalization group.Bigger group can increase the precision as compared with triangular and hexagonal crystal lattice.