Strongly correlating liquids and their isomorphs

Details Strongly correlating liquids and their isomorphs Strongly correlating liquids and their isomorphs

2010-04-07

arxiv.org/abs/1004.1182v1

J. Non-Cryst. Solids 357, 320 (2011 )

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

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.

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