论文标题
在散射实验中观察到的动态异质性与四体相关性之间的关系
Relation between dynamic heterogeneities observed in scattering experiments and four-body correlations
论文作者
论文摘要
预计动态异质性将是理解玻璃过渡附近缓慢动态的起源的关键概念。在先前的研究中，已经尝试使用两种不同的途径，即散射实验中的斑点模式或微观构型数据的四体相关函数尝试从分子动力学模拟或使用共聚焦显微镜进行真实空间观测值获得的四体相关函数。但是，尚未阐明使用不同方法获得的这些动态异质性之间的物理关系。这项研究提出了基于斑点模式和从四体相关性获得的动态异质性之间的联系。关系的有效性也被阐明。
Dynamic heterogeneity is expected to be a key concept for understanding the origin of slow dynamics near the glass transition. In previous studies, quantitative evaluations of dynamic heterogeneity have been attempted using two different routes, i.e., the speckle patterns in scattering experiments or the four-body correlation functions of microscopic configuration data obtained from molecular dynamics simulations or real-space observations using confocal microscopy. However, the physical relationship between these dynamic heterogeneities obtained using different methods has not been clarified. This study proposes a connection between dynamic heterogeneities characterized based on speckle patterns and those obtained from four-body correlations. The validity of the relationship is also clarified.
