Density-temperature-softness scaling of the dynamics of glass-forming soft-sphere liquids

Pedro E. Ramírez-González*, Leticia López-Flores, Heriberto Acuña-Campa, Magdaleno Medina-Noyola

*Autor correspondiente de este trabajo

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

34 Citas (Scopus)

Resumen

We employ the principle of dynamic equivalence between soft-sphere and hard-sphere fluids to describe the interplay of the effects of varying the density n, the temperature T, and the softness (characterized by a softness parameter ν-1) on the dynamics of glass-forming soft-sphere liquids in terms of simple scaling rules. The main prediction is the existence of a dynamic universality class associated with the hard-sphere fluid, constituted by the soft-sphere systems whose dynamic parameters depend on n, T, and ν only through the reduced density n*HS(T*,ν). A number of scaling properties observed in recent experiments and simulations involving glass-forming fluids with repulsive short-range interactions are found to be a direct manifestation of this general dynamic equivalence principle.

Idioma originalInglés
Número de artículo155701
PublicaciónPhysical Review Letters
Volumen107
N.º15
DOI
EstadoPublicada - 3 oct. 2011

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