节点文献
利用权重因子修正伊辛模型重正化群解
Revision on solution of the renormalization group for Ising model with weight factor
【摘要】 用重正化群中的PSRG方法,引入能级的权重因子,研究五格点集团构成的正方格子伊辛模型.将该方法求出的重正化群方法的解J/kBT和临界指数与修正前及选取较大Kadanoff集团所得结果比较,发现修正后的结果更接近严格解.
【Abstract】 Two dimensional tetragonal Ising model is studied with PSRG method in the Renormalization Group(RG) by introducing a energy dependent weight factor, when the Kadanoff clusters are constructed with five-point cluster. The new solution to the RG method and its corresponding critical indices are deduced, which approach exact solution more than those of before revision, as well as a larger Kadanoff cluster.
【关键词】 重正化群变换；
伊辛模型；
权重因子；
临界指数；
【Key words】 Counter change of the renormalization； Ising model； weight factor； critical indices；
【Key words】 Counter change of the renormalization； Ising model； weight factor； critical indices；
【基金】 湖北省教育厅优秀中青年项目(2002B0006)资助
- 【文献出处】 湖北大学学报(自然科学版) ,Journal of Hubei University(Natural Science Edition) , 编辑部邮箱 ,2005年01期
- 【分类号】O414.2
- 【下载频次】73