Accelerated relaxation and suppressed dynamic heterogeneity in a kinetically constrained (East) model with swaps
| Autor: | Juan P. Garrahan, Ricardo Gutiérrez, Robert L. Jack |
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| Přispěvatelé: | Engineering and Physical Sciences Research Council (EPSRC), Jack, Robert [0000-0003-0086-4573], Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Statistics and Probability
Aging Matemáticas FOS: Physical sciences 02 engineering and technology Kinetic energy 01 natural sciences glasses (structural) Swap (finance) Glasses structural 0103 physical sciences Spin model Dynamical heterogeneity Statistical physics Glassy dynamics 010306 general physics Condensed Matter - Statistical Mechanics Spin-½ Physics Statistical Mechanics (cond-mat.stat-mech) aging Statistical and Nonlinear Physics 021001 nanoscience & nanotechnology glassy dynamics slow relaxation Relaxation (physics) Slow relaxation Statistics Probability and Uncertainty 0210 nano-technology |
| Zdroj: | e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid instname e-Archivo: Repositorio Institucional de la Universidad Carlos III de Madrid Universidad Carlos III de Madrid (UC3M) |
| Popis: | 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. Comment: 20 pages, accepted version |
| Databáze: | OpenAIRE |
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