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Energy barriers, entropy barriers, and non-Arrhenius behavior in a minimal glassy model
Physical review. E
We study glassy dynamics using a simulation of three soft Brownian particles confined to a two-dimensional circular region. If the circular region is large, the disks freely rearrange, but rearrangements are rarer for smaller system sizes. We directly measure a one-dimensional free energy landscape characterizing the dynamics. This landscape has two local minima corresponding to the two distinct disk configurations, separated by a free energy barrier which governs the rearrangement rate. Wedoi:10.1103/physreve.93.062613 pmid:27415326 fatcat:74idpsj3j5cndakbhxz6rno2ha