摘要
采用组合近似和图形展开技术计算了Bethe type格子上Ising模型的多自旋关联函数 结果表明 ,在任何有限温度都不存在长程关联 。
The multi spin correlation function of the Ising model on Bethe type lattice is calculated with combinatorial approach and graph expansion method. The results indicate no existence of the long range correlation at any finite temperature, which implies that no finite temperature phase transition occurs.
出处
《山东大学学报（工学版）》
CAS
2002年第5期441-443,493,共4页
Journal of Shandong University（Engineering Science）
