A Solvable Decorated Ising Lattice Model  

作　　者：SUN Chun-Feng KONG Xiang-Mu YIN Xun-Chang 

机构地区：[1]Department of Physics, Xiaogan University, Xiaogan 432100, China [2]Department of Physics, Qufu Normal University, Qufu 273165, China [3]Interdisciplinary Center of Theoretical Studies, the Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Communications in Theoretical Physics》2006年第3期555-557,共3页理论物理通讯（英文版）

基　　金：The project supported by the Natural Science Foundation of Xiaogan University and the Science Foundation of Qufu Normal University

摘　　要：A decorated lattice is suggested and the Ising model on it with three kinds of interactions K1, K2, and K3 is studied. Using an equivalent transformation, the square decorated Ising lattice is transformed into a regular square Ising lattice with nearest-neighbor, next-nearest-nelghbor, and four-spin interactions, and the critical fixed point is found at K1 = 0.5769, K2= -0.0671, and K3 = 0.3428, which determines the critical temperature of the system. It is also found that this system and the regular square Ising lattice, and the eight-vertex model belong to the same universality class.

关 键 词：Ising model square decorated lattice critical point universality class 

分 类 号：O415[理学—理论物理] O7[理学—物理]