Exponential distributions of collective flow-event properties in viscous liquid dynamics

Abstract

We study the statistics of flow events in the inherent dynamics in supercooled two- and three-dimensional binary Lennard-Jones liquids. Distributions of changes of the collective quantities energy, pressure and shear stress become exponential at low temperatures, as does that of the event "size" $S\equiv \sum {d_i}^2$. We show how the $S$-distribution controls the others, while itself following from exponential tails in the distributions of (1) single particle displacements $d$, involving a Lindemann-like length $d_L$ and (2) the number of active particles (with $d>d_L$).

arXiv commentAccepter version (PRL)

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Cited by in corpus (5)

• Exploring the jamming transition over a wide range of critical densities
• The Origin of Persistent Shear Stress in Supercooled Liquids
• Distance-as-time in physical aging
• Deformation of inherent structures to detect long-range correlations in supercooled liquids
• Influence of inherent structure shear stress of supercooled liquids on their shear moduli