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Inherent structures and nonequilibrium dynamics of one-dimensional constrained kinetic models: A comparison study

机译:一维约束动力学模型的固有结构和非平衡动力学:比较研究

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摘要

We discuss the relevance of the Stillinger and Weber approach to the glass transition investigating the nonequilibrium behavior of models with nontrivial dynamics, but with simple equilibrium properties. We consider a family of 1D constrained kinetic models, which interpolates between the asymmetric chain introduced by Jackle and Eisinger [Z. Phys. B 84, 115 (1991)] and the symmetric chain introduced by Fredrickson and Andersen [Phys. Rev. Lett 53, 1244 (1984)], and the 1D version of the Backgammon model [Phys. Rev. Lett. 75, 1190 (1995)]. We show that the configurational entropy obtained from the inherent structures is the same for all models irrespective of their different microscopic dynamics. We present a detailed study of the coarsening behavior of these models, including the relation between fluctuations and response. Our results suggest that any approach to the glass transition inspired by mean-field ideas and resting on the definition of a configurational entropy must rely on the absence of any growing characteristic coarsening pattern. (C) 2000 American Institute of Physics. [S0021-9606(00)51347-6].
机译:我们讨论了Stillinger和Weber方法与玻璃化转变的相关性,玻璃化转变研究了具有非平凡动力学但具有简单平衡特性的模型的非平衡行为。我们考虑一维约束动力学模型族,它们插在Jackle和Eisinger [Z.物理B 84,115(1991)]和Fredrickson和Andersen提出的对称链[Phys。 Rev. Lett 53,1244(1984)]和步步高模型的一维版本[Phys。牧师75,1190(1995)]。我们表明,从固有结构获得的构型熵对于所有模型都是相同的,而不管它们的微观动力学如何不同。我们对这些模型的粗化行为进行了详细研究,包括波动与响应之间的关系。我们的结果表明,任何受均值场思想启发并基于构型熵的定义进行玻璃化转变的方法,都必须依靠不存在任何增长的特征性粗化模式。 (C)2000美国物理研究所。 [S0021-9606(00)51347-6]。

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