arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.00875cond-mat.mtrl-sci
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高压冰VII的动力特性

The dynamic nature of high pressure ice VII

Qi-Jun Ye, Lin Zhuang, Xin-Zheng Li

摘要:

从Shannon的动力学熵定义出发,提出了一个描述凝聚态中不同稀有事件相关动力学态之间转变的简单理论,并将其用于高压冰VII的研究。用一个动力学的强量(动力场)代替温度、压力等热力学的强量作为相变的控制变量。基于动态熵-动态场曲线,从纯动力学的角度严格区分了冰VII和动态冰VII的两种动力学状态。他们的微观差异被分配到质子转移的动态模式。这项研究将早期玻璃模型研究中使用的类似动力学理论置于一个简单和更基本的基础上,可以应用于描述现实和更凝聚态系统的动态。

英文摘要:

Starting from Shannon's definition of dynamic entropy, we proposed a simple theory to describe the transition between different rare event related dynamic states in condensed matters, and used it to investigate high pressure ice VII. Instead of the thermodynamic intensive quantities such as the temperature and pressure, a dynamic intensive quantity named dynamic field is taken as the controlling variable for the transition. Based on the dynamic entropy versus dynamic field curve, two dynamic states corresponding to ice VII and dynamic ice VII were discriminated rigorously in a pure dynamic view. Their microscopic differences were assigned to the dynamic patterns of proton transfer. This study puts a similar dynamical theory used in earlier studies of glass models on a simple and more fundamental basis, which could be applied to describe the dynamic states of realistic and more condensed matter systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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