Accelerated relaxation and suppressed dynamic heterogeneity in a kinetically constrained (East) model with swaps

Abstract

We introduce a kinetically constrained spin model with a local softness parameter, such that spin flips can violate the kinetic constraint with an (annealed) site-dependent rate. We show that adding MC swap moves to this model can dramatically accelerate structural relaxation. We discuss the connection of this observation with the fact that swap moves are also able to accelerate relaxation in structural glasses. We analyse the rates of relaxation in the model. We also show that the extent of dynamical heterogeneity is strongly suppressed by the swap moves.

Citation

Gutiérrez, R., Garrahan, J. P., & Jack, R. L. (2019). Accelerated relaxation and suppressed dynamic heterogeneity in a kinetically constrained (East) model with swaps. Journal of Statistical Mechanics: Theory and Experiment, 2019(9), Article 094006. https://doi.org/10.1088/1742-5468/ab39d8

• Journal Article Type: Article
• Acceptance Date: Jul 24, 2019
• Online Publication Date: Sep 2, 2019
• Publication Date: Sep 2, 2019
• Deposit Date: Sep 23, 2019
• Publicly Available Date: Sep 3, 2020
• Journal: Journal of Statistical Mechanics: Theory and Experiment
• Electronic ISSN: 1742-5468
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 2019
• Issue: 9
• Article Number: 094006
• DOI: https://doi.org/10.1088/1742-5468/ab39d8
• Keywords: Statistics, Probability and Uncertainty; Statistics and Probability; Statistical and Nonlinear Physics
• Public URL: https://nottingham-repository.worktribe.com/output/2649263
• Publisher URL: https://iopscience.iop.org/article/10.1088/1742-5468/ab39d8
• Additional Information: This is an author-created, un-copyedited version of an article accepted for publication/published in Journal of Statistical Mechanics: Theory and Experiment. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 0.1088/1742-5468/ab39d8