摘要
本文用变分累积展开对Ｉｓｉｎｇ模型的临界温度的计算提出一种直观的图示解法，使计算大为简化。应用此法求得各阶临界温度与其他文献推算结果相一致。本文利用此法计算二维Ｉｓｉｎｇ模型八阶临界温度Ｔｃ（８）＝２．４７６７１，此法也可以推广到三维的情形．
An audio-visual graphical method of the variational-Cumulant expansion (VCE) for calculation the critical temperature is sugested using this method, the results of critical temperature in each order are in agreement with other article's. In this paper .the model is evaluated to 8th order. Tc(8) = 2. 47671 (J/K) . This method is also valid for 3-dimensional case.
出处
《南开大学学报（自然科学版）》
CAS
CSCD
1995年第1期98-101,共4页
Acta Scientiarum Naturalium Universitatis Nankaiensis
关键词
变分累积展开
伊辛模型
临界温度
Ising model
Variational-Cumulant Expansion
Critical temperature
