The breakdown of the Stokes-Einstein (SE) law in fragile glassformers is examined by Molecular-Dynamics simulations of atomic liquids and polymers and consideration of the experimental data concerning the archetypical ortho-terphenyl glassformer. All the four systems comply with the universal scaling between the viscosity (or the structural relaxation) and the Debye-Waller factor ⟨u²⟩, the mean square amplitude of the particle rattling in the cage formed by the surrounding neighbors. It is found that the SE breakdown is scaled in a master curve by a reduced ⟨u²⟩. Two approximated expressions of the latter, with no and one adjustable parameter, respectively, are derived.

中文翻译：

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交流：脆弱的玻璃成型机中斯托克斯-爱因斯坦定律分解的快速动力学视角

通过分子液体和聚合物的分子动力学模拟，并考虑有关原型邻三联苯玻璃形成剂的实验数据，研究了易碎玻璃形成器中斯托克斯-爱因斯坦（SE）定律的分解。所有这四个系统都符合粘度（或结构弛豫）与Debye-Waller因子⟨u ² between之间的通用标度，Debye-Waller因子u ²是在周围的邻居形成的笼子中发出咔嗒声的均方振幅。发现SE击穿在主曲线中按减少的u u ²来缩放。推导了后者的两个近似表达式，分别没有参数和一个可调参数。