Time correlation functions between Inherent Structures: a connection between landscape topology and the dynamics of glassy systems
arXiv:cond-mat/0308022 · doi:10.1016/j.physa.2003.09.021
Abstract
We introduce time correlation functions between Inherent Structures (IS) of a supercooled liquid. We show that these functions are useful to relate the slowing down of the dynamics to the structure of the energy landscape near the glass transition temperature. They show a short time regime during which the system remains in the basin of a particular IS and a long time regime where it explores the neighborhood of an IS. We compare the behavior of these functions in a binary Lennard-Jones supercooled liquid and in a model of traps and show that they behave qualitatively different. This comparison reflects the presence/absence of structure in the landscape of the Lennard-Jones/traps models. Possible scenarios for the structure of the landscape which are compatible with these results are discussed.
References in corpus (5)
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Cited by in corpus (5)
- Fickian crossover and lengthscales from two point functions in supercooled liquids
- Non-affine deformations of inherent structure as signature of cooperativity in supercooled liquids
- Barriers, trapping times and overlaps between local minima in the dynamics of the disordered Ising -spin Model
- Revisiting the Concept of Activation in Supercooled Liquids
- Inherent structures dynamics in glasses: a comparative study