Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2010-06-18
EPL 94 (2011) 10003
Physics
Condensed Matter
Disordered Systems and Neural Networks
5 pages, 5 figures
Scientific paper
10.1209/0295-5075/94/10003
Kinetically Constrained Models (KCMs) have been widely studied in the context of glassy dynamics, focusing on the influence of dynamical constraints on the slowing down of the dynamics of a macroscopic system. In these models, it has been shown using the thermodynamic formalism for histories, that there is a coexistence between an active and an inactive phase. This coexistence can be described by a first-order transition, and a related discontinuity in the derivative of the large deviation function for the activity. We show that adding a driving field to a KCM model does not destroy this first-order transition for the activity. Moreover, a singularity is also found in the large deviation function of the current at large fields. We relate for the first time this property to microscopic structures, in particular the heterogeneous, intermittent dynamics of the particles, transient shear-banding and blocking walls. We describe both the shear-thinning and the shear-thickening regimes, and find that the behaviour of the current is well reproduced by a simple model.
Pitard Estelle
Turci Francesco
No associations
LandOfFree
Large deviations and heterogeneities in a driven kinetically constrained model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Large deviations and heterogeneities in a driven kinetically constrained model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large deviations and heterogeneities in a driven kinetically constrained model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-260562