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26 April 2024

» arxiv » 1705.0855

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Activity statistics in a colloidal glass former: experimental evidence for a dynamical transition
Bérengère Abou ; Rémy Colin ; Vivien Lecomte ; Estelle Pitard ; Frédéric van Wijland ;
Date:	2 May 2017
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.
Source:	arXiv, 1705.0855
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