Ensemble inequivalence in a XY model with long-range interactions

被引：0
|
作者：
de Buyl, P [1 ]
Mukamel, D [1 ]
Ruffo, S [1 ]
机构：
[1] Univ Libre Bruxelles, Ctr Nonlinear Phenomena & Complex Syst, Fac Sci, B-1050 Brussels, Belgium
来源：
Unsolved Problems of Noise and Fluctuations | 2005年 / 800卷
关键词：
long-range interactions; large deviation techniques; XY model; ensemble inequivalence;
D O I：
暂无
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We introduce a new XY mean-field spin system whose canonical and microcanonical thermodynamics can be solved exactly. Microcanonical entropy is obtained by a novel use of large deviation techniques. The model desplays ensemble inequivalence and the presence of negative specific heat and temperature jumps in the microcanonical ensemble.
引用
收藏
页码：533 / 538
页数：6
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