Intrinsic viscous liquid dynamics

TL;DR

This paper introduces Randium, a coarse-grained model that captures the universal intrinsic dynamics of viscous liquids, bridging microscopic and theoretical descriptions of glass-forming liquids.

Contribution

The paper presents Randium, a new generic model that reproduces the universal features of viscous liquid relaxation dynamics.

Findings

Randium exhibits universal spectral features of viscous liquids.

The model captures temperature dependence of structural relaxation.

Results suggest a universal class of systems for viscous liquid dynamics.

Abstract

When liquids are cooled, their dynamics are slowed, and if crystallization is avoided, they will solidify into an amorphous structure referred to as a glass. Experiments show that chemically distinct glass-forming liquids have universal features of the spectrum and temperature dependence of the main structural relaxation. We introduce Randium, a generic energetically coarse-grained model of viscous liquids, and demonstrate that the intrinsic dynamics of viscous liquids emerges. These results suggest that Randium belongs to a universal class of systems whose dynamics capture the essential physics of viscous liquid relaxation, bridging microscopic molecular models and coarse-grained theoretical descriptions.