Activity statistics in a colloidal glass former: experimental evidence for a dynamical transition
Soft Condensed Matter
2022-08-31 v2 Disordered Systems and Neural Networks
Statistical Mechanics
Abstract
In a dense colloidal suspension at a volume fraction slightly lower than that of its glass transition, we follow the trajectories of an assembly of tracers over a large time window. We define a local activity, which quantifies the local tendency of the system to rearrange. We determine the statistics of the time and space integrated activity, and we argue that it develops a low activity tail that comes on a par with the onset of glassy behavior and heterogeneous dynamics. These rare events may be interpreted as the reflection of an underlying dynamic phase transition.
Cite
@article{arxiv.1705.00855,
title = {Activity statistics in a colloidal glass former: experimental evidence for a dynamical transition},
author = {Bérengère Abou and Rémy Colin and Vivien Lecomte and Estelle Pitard and Frédéric van Wijland},
journal= {arXiv preprint arXiv:1705.00855},
year = {2022}
}
Comments
20 pages, 16 figures