摘要翻译:
利用动态倾向性的概念,将玻璃成型体的动态不均匀性与其静态结构联系起来。我们通过分析两个原子玻璃形成器和两个理论模型中的动力学涨落来重新审视这种关系。我们引入了定量统计指标,这些指标表明单个粒子的动力学不能根据倾向性来预测,也不能通过任何结构指标来预测。然而,倾向场的空间结构对与动态异质性相关的空间相关性具有预测能力。我们的结果表明,在粒子水平上寻求玻璃形成物的静态和动态特性之间的联系是徒劳的,但它们证明了这种联系在更大的长度尺度上确实存在。
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英文标题:
《Structure and dynamics in glass-formers: predictability at large length
scales》
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作者:
Ludovic Berthier, Robert L. Jack
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
Dynamic heterogeneity in glass-formers has been related to their static structure using the concept of dynamic propensity. We re-examine this relationship by analyzing dynamical fluctuations in two atomistic glass-formers and two theoretical models. We introduce quantitative statistical indicators which show that the dynamics of individual particles cannot be predicted on the basis of the propensity, nor by any structural indicator. However, the spatial structure of the propensity field does have predictive power for the spatial correlations associated with dynamic heterogeneity. Our results suggest that the quest for a connection between static and dynamic properties of glass-formers at the particle level is vain, but they demonstrate that such connection does exist on larger length scales.
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PDF链接:
https://arxiv.org/pdf/706.1044