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arXiv 2401.09830cond-mat.dis-nncond-mat.stat-mech
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钉扎界面中热蠕变的动态非均匀性

Dynamical heterogeneities of thermal creep in pinned interfaces

Tom W. J. de Geus, Alberto Rosso, Matthieu Wyart

AI总结:

本文针对无序材料热蠕变与近玻璃化转变液体动力学,提出统一的标度描述以刻画热雪崩导致的动态非均匀性,并通过钉扎弹性界面模型验证。

摘要:

受外加载荷的无序系统在有限温度下表现出缓慢的蠕变流动,这可能导致材料断裂。重整化群论证预测,蠕变通过活化事件的热雪崩进行。最近,有观点认为热雪崩控制着液体在玻璃化转变附近的动力学。这两种理论方法存在显著差异。本文提出一种标度描述,旨在统一两种现象中的动态非均匀性,在钉扎弹性界面的简单模型中对其加以验证,并讨论其实验意义。

英文摘要:

Disordered systems under applied loading display slow creep flows at finite temperature, which can lead to the material rupture. Renormalization group arguments predicted that creep proceeds via thermal avalanches of activated events. Recently, thermal avalanches were argued to control the dynamics of liquids near their glass transition. Both theoretical approaches are markedly different. Here we provide a scaling description that seeks to unify dynamical heterogeneities in both phenomena, confirm it in simple models of pinned elastic interfaces, and discuss its experimental implications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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