Crossover behaviour of a one dimensional Random Energy Model

Details Crossover behaviour of a one dimensional Random Energy Model Crossover behaviour of a one dimensional Random Energy Model

1998-03-11

arxiv.org/abs/cond-mat/9803136v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

6 pages, 5 figures

Scientific paper

10.1103/PhysRevE.58.5455

In this note we formulate a finite dimensional generalization of the Random Energy Model (REM) where we introduce a geometry and spatial correlations between energies. We study the model in dimension one by transfer matrix techniques and we look at the crossover from one dimensional to mean-field behaviour. In a first version of the model the mean field limit reproduces the behaviour of the original REM, while a second version of the model exhibits a first order phase transition with a finite latent heat.

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