摘要
对q=3,4矢量Clock模型相变性质用解析方法进行研究.用两变分参数的尝试作用量,计算了q=3,4矢量Clock模型的自由能和内能累积展开到4级的近似解析值,比热、磁化强度展开到3级的近似解析值,并讨论其相变点及相变性质.所得结果与Monte Carlo数值计算结果符合较好.此结果验证了解析方法的可行性。
Free energy ( W) and internal energy ( E ) up to the 4th order approximation, and specific heat ( C) and magnetization ( M ) up to the 3rd order approximation are calculated with the trial action of two vari-ational parameters, and the point of phase transition is obtained and the order of phase transition is discussed as well. The position of phase transition point given above agrees with the results of Monte Carlo ( MC)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
2003年第4期457-459,共3页
Journal of Harbin Engineering University