Entropy barriers and slow relaxation in some random walk models
- 7 December 1995
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 28 (23) , L603-L611
- https://doi.org/10.1088/0305-4470/28/23/002
Abstract
We study the zero temperature limit of a simple model of slow relaxation without energy barriers, proposed by Ritort (1995), as well as two other closely related models with a much faster relaxation. These models can be mapped onto random walk problems, which allows for their analytic study. We analyse, in particular, a specific aspect of the former model, namely the existence of a bias leading to `entropy barriers` and to a very slow relaxation.Keywords
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