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arXiv 1702.07221cond-mat.softcond-mat.mtrl-sci
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液体的动力学、热力学和结构性质之间的直接联系:模拟结果

Direct links between dynamical, thermodynamic and structural properties of liquids: modelling results

L. Wang, C. Yang, M. T. Dove, Yu. D. Fomin, V. V. Brazhkin, K. Trachenko

摘要:

我们开发了一种基于集体模式的液体热力学方法。我们进行了广泛的分子动力学模拟的贵,分子和金属液体,并提供直接的证据,液体能量和比热很好地描述了温度依赖的弗伦克尔(跳频)频率。预测和计算的热力学性质之间的协议被认为是在非常宽的温度范围跨越数万开尔文。该范围包括亚临界液体和超临界流体。讨论了液体和超临界流体的结构交叉和结构、动力学和热力学之间的相互关系。

英文摘要:

We develop an approach to liquid thermodynamics based on collective modes. We perform extensive molecular dynamics simulations of noble, molecular and metallic liquids and provide the direct evidence that liquid energy and specific heat are well-described by the temperature dependence of the Frenkel (hopping) frequency. The agreement between predicted and calculated thermodynamic properties is seen in the notably wide range of temperature spanning tens of thousands of Kelvin. The range includes both subcritical liquids and supercritical fluids. We discuss the structural crossover and inter-relationships between structure, dynamics and thermodynamics of liquids and supercritical fluids.

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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