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Structure and structure relaxation
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DOI：10.1016/S0022-3093(98)00500-6.png)
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Abstract
En 中文
A discrete-dynamics model, which is specified solely in terms of a 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. (C) 1998 Elsevier Science B.V. All rights reserved.
Keywords:
LIQUID-GLASS TRANSITION
MODE-COUPLING-THEORY
LIGHT-SCATTERING
SUPERCOOLED LIQUIDS
BETA-RELAXATION
DYNAMICS
SPECTRA
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