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Structure and structure relaxation

T. Franosch·W. Götze·M. R. Mayr·A. P. Singh
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Abstract

A discrete--dynamics model, which is specified solely in terms of the system's equilibrium structure, is defined for the density correlators of a simple fluid. This model yields results for the evolution of glassy dynamics which are identical with the ones obtained from the mode-coupling theory for ideal liquid--glass transitions. The decay of density fluctuations outside the transient regime is shown to be given by a superposition of Debye processes. The concept of structural relaxation is given a precise meaning. It is proven that the long-time part of the mode-coupling-theory solutions is structural relaxation, while the transient motion merely determines an overall time scale for the glassy dynamics.

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T. Franosch, W. Götze, M. R. Mayr, A. P. Singh. 1998-07-01. Structure and structure relaxation. https://doi.org/10.1016/s0022-3093(98)00500-6

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