Dynamics in the Metabasin Space of a Lennard-Jones Glass Former: Connectivity and Transition Rates

Details Dynamics in the Metabasin Space of a Lennard-Jones Glass Former: Connectivity and Transition Rates Dynamics in the Metabasin Space of a Lennard-Jones Glass Former: Connectivity and Transition Rates

2008-10-14

arxiv.org/abs/0810.2484v2

Physics

Condensed Matter

Soft Condensed Matter

8 pages, 10 figures. References add. A typo corrected

Scientific paper

Using simulations, we construct the effective dynamics in metabasin space for a Lennard-Jones glass-former. Metabasins are identified via a scheme that measures transition rates between inherent structures, and generates clusters of inherent structures by drawing in branches that have the largest transition rates. The effective dynamics is shown to be Markovian but differs significantly from the simplest trap models. We specifically show that retaining information about the connectivity in metabasin space is crucial for reproducing the slow dynamics observed in this system.

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