Zeroth order phase transition induced by ergodicity breaking in a mean-field system

被引：10
|
作者：
Hou, Ji-Xuan [1 ]
机构：
[1] Southeast Univ, Sch Phys, Nanjing 211189, Jiangsu, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL B | 2021年 / 94卷 / 01期
关键词：
Ergodicity - Global phase diagrams - Mean field - Mean-field interactions - Microcanonical ensembles - Spin chain models - Transition point - Zero order;
D O I：
10.1140/epjb/s10051-020-00025-3
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A spin chain model with mean-field interactions is studied within the microcanonical ensemble. Under local microcanonical dynamics, gaps in the space of extensive variables can be open up leading to the ergodicity breaking of this system. As a consequence, our mean-field system can exhibit the zero-order phase transition accompanied with an entropy jump at the transition point. Moreover, the global phase diagram of the system is constructed.GraphicAbstract
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页数：6
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