一种在实空间重整化群中处理大Kadanoff原胞的方法

An Approach to Large Kadanoff Blocks in Real Space Renormalization Groups

通过考虑晶格对称性，提出了一种便于在实空间重整化群中处理大Ｋａｄａｎｏｆｆ原胞的方法，在此方法中，对构形求和转化为对基本图形求和．利用此方法计算出了二级简平方晶格的临界指数．

Taking into account the symmetricity, an convenient approach to treat large Kadanoff blocks in real space renormalization groups is introduced.In the approach,summation over configuration is transfered to summation over some basic diagrams.To demonstrate the convenience of theapproach, critical exponents for nine spin square blocks on a two dimensional lattice for the nearest neighbor Ising model are calculated.