Splitting of the Universality Class of Anomalous Transport in Crowded Media.
Splitting of the Universality Class of Anomalous Transport in Crowded Media.
复制标题
拥挤媒体中异常传输普遍性类别的分裂。
DOI：
10.1103/physrevlett.116.060601
复制
发表时间：
2016
影响因子：
8.6
通讯作者：
T. Franosch
中科院分区：
文献类型：
--
作者：
M. Spanner;F. Höfling;S. Kapfer;K. Mecke;G. Schröder;T. Franosch
我们研究了分子拥挤连续介质模型中由阻塞引起的次扩散输运的出现。尽管可接近空间的潜在渗流转变表现出普遍的行为，但动态性质以一种微妙的非普遍的方式依赖于通过狭窄通道的传输。同时，不同的普适性类对于在障碍矩阵中引入关联是健壮的，就像我们对淬火的硬球液体作为底层结构所演示的那样。我们的结果证实了微观动力学即使在很长的时间内也可以主导驰豫行为，这与玻璃动力学形成了鲜明的对比。
We investigate the emergence of subdiffusive transport by obstruction in continuum models for molecular crowding. While the underlying percolation transition for the accessible space displays universal behavior, the dynamic properties depend in a subtle nonuniversal way on the transport through narrow channels. At the same time, the different universality classes are robust with respect to introducing correlations in the obstacle matrix as we demonstrate for quenched hard-sphere liquids as underlying structures. Our results confirm that the microscopic dynamics can dominate the relaxational behavior even at long times, in striking contrast to glassy dynamics.