Cluster growth and dynamic scaling in a two-lane driven diffusive system

Details Cluster growth and dynamic scaling in a two-lane driven diffusive system Cluster growth and dynamic scaling in a two-lane driven diffusive system

2006-02-24

arxiv.org/abs/cond-mat/0602595v1

Physics

Condensed Matter

Statistical Mechanics

17 pages, 9 figures. Accepted by Journal of Physics A (2006)

Scientific paper

10.1088/0305-4470/39/14/001

Using high precision Monte Carlo simulations and a mean-field theory, we explore coarsening phenomena in a simple driven diffusive system. The model is reminiscent of vehicular traffic on a two-lane ring road. At sufficiently high density, the system develops jams (clusters) which coarsen with time. A key parameter is the passing probability, $\gamma$. For small values of $\gamma$, the growing clusters display dynamic scaling, with a growth exponent of 2/3. For larger values of $\gamma$, the growth exponent must be adjusted, suggesting the ordered (jammed) state is not a genuine phase but rather a finite size effect.

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