Analytical study of the layered XY model with VCE method

被引:0
|
作者
Liu, SA [1 ]
Wang, Q
Li, H
Chen, TL
机构
[1] Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China
[2] Acad Sinica, Inst Semicond, State Key Lab Optoelect Integrat, Beijing 100083, Peoples R China
关键词
variational cumulant expansion; the layered XY model;
D O I
暂无
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Motivated by experiments on liquid-crystal films, we study the development of specific heat anomaly of finite layer system. With the VCE method, we introduce the strong surface interaction into the layered XY model and get the results of the forth-order analytical expansion. The results show that when the strong surface interaction becomes strong enough, the order trend defeats the quantum noise and the specific heat peak moves abnormally to the high temperature with the number of layers decreasing.
引用
收藏
页码:339 / 344
页数:6
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