Activity statistics in a colloidal glass former: experimental evidence for a dynamical transition

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.
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https://hal.archives-ouvertes.fr/hal-01517340
Contributeur : Vivien Lecomte <>
Soumis le : mercredi 3 mai 2017 - 09:30:00
Dernière modification le : vendredi 7 juillet 2017 - 01:12:31

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  • HAL Id : hal-01517340, version 1
  • ARXIV : 1705.00855

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UPMC | LIPHY | PMA | UGA | USPC | MIPS

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Bérengère Abou, Rémy Colin, Vivien Lecomte, Estelle Pitard, Frédéric Van Wijland. Activity statistics in a colloidal glass former: experimental evidence for a dynamical transition. 10 pages, 15 figures. 2017. <hal-01517340>

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