Coarse-grained microscopic model of glass formers

Abstract

We introduce a coarse-grained model for atomic glass formers. Its elements are physically motivated local microscopic dynamical rules parameterized by observables. Results of the model are established and used to interpret the measured behaviors of supercooled fluids approaching glass transitions. The model predicts the presence of a crossover from hierarchical super-Arrhenius dynamics at short length scales to diffusive Arrhenius dynamics at large length scales. This prediction distinguishes our model from other theories of glass formers and can be tested by experiment.

5 pages, 5 figures

References in corpus (2)

• Glassy dynamics of kinetically constrained models
• Geometrical explanation and scaling of dynamical heterogeneities in glass forming systems

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