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arXiv 1004.1182cond-mat.soft
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强关联液体及其同构

Strongly correlating liquids and their isomorphs

Ulf R. Pedersen, Nicoletta Gnan, Nicholas P. Bailey, Thomas B. Schröder, Jeppe C. Dyre

摘要:

本文总结了强关联液体的性质,即,在定容条件下,维里和势能平衡波动之间有很强的相关性。我们继续专注于强相关的玻璃形成液体的实验预测。这些预测包括i)密度标度,ii)等时叠加,iii)存在单个函数,从该单个函数可以计算所有频率依赖的粘弹性响应函数,iv)强相关液体是具有接近于1的Prigogine-Defay比的近似单参数液体,以及v)假想温度最初对于等压温度上跳而降低。的“同构过滤器”,它允许一个测试的普遍性的理论的非阿克里乌斯温度依赖的弛豫时间,也简要讨论。

英文摘要:

This paper summarizes the properties of strongly correlating liquids, i.e., liquids with strong correlations between virial and potential energy equilibrium fluctuations at constant volume. We proceed to focus on the experimental predictions for strongly correlating glass-forming liquids. These predictions include i) density scaling, ii) isochronal superposition, iii) that there is a single function from which all frequency-dependent viscoelastic response functions may be calculated, iv) that strongly correlating liquids are approximately single-parameter liquids with close to unity Prigogine-Defay ratio, and v) that the fictive temperature initially decreases for an isobaric temperature up jump. The "isomorph filter", which allows one to test for universality of theories for the non-Arrhenius temperature dependence of the relaxation time, is also briefly discussed.

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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