A simple approximation for Ising spin models

被引：1
|
作者：
Mohamad, Hadey K. [1 ]
机构：
[1] Al Muthanna Univ, Coll Sci, Samawah 550, Iraq
来源：
CHINESE JOURNAL OF PHYSICS | 2018年 / 56卷 / 04期
关键词：
Statistical theory; Ising model; Approximation methods; Critical temperatures; FIELD-THEORY; SYSTEM;
D O I：
10.1016/j.cjph.2018.06.019
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A simple method is introduced for Ising spin systems based on the correlated molecular-field theory. Here, we consider an interacting triple in the mean field of its surrounding lattice points taking into account the product of three spins in the cluster. The present results for Curie temperature are compared to the mean-field theory(MFT), Bethe-Peierls-Weiss(BPW) approach, and self-consistent correlated field(SCCF) approximation, respectively. A procedure of triangular clusters is investigated that yields very distinguishable improvement of the critical temperature, as well.
引用
收藏
页码：1547 / 1550
页数：4
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