关于二级相变中的熵变分析  

The Analysis of the Entropychange in Second-Order Phase Transition

作　　者：彭定燕 韩文娟[1] 龙琳 

机构地区：[1]六盘水师范学院,物理与电气工程学院,贵州 六盘水

出　　处：《应用物理》2021年第3期172-177,共6页Applied Physics

摘　　要：本文对物质二级相变中的熵情况进行研究,先介绍二级相变特征及二级相变中的熵情况,然后使用自旋链模型计算模拟体系的von Neumann熵,揭示二级相变的机理,对深入理解二级相变的内在根源、二级相变的特征具有重要意义。The entropy in the second-order phase transition of matter is studied in this paper. Firstly, the characteristics of second order phase transition and entropy in second order phase transition are introduced. Then, the von Neumann entropy is calculated and simulated with the spin chain model to reveal the mechanism of the second-order phase transition. It is significant to understand deeply the internal origin of the second-order phase transition and the characteristics of the second-order phase transition.

关 键 词：二级相变 熵变 自旋链模型 von Neumann熵 

分 类 号：O17[理学—数学]