Disorder-induced critical behavior in driven diffusive systems

Details Disorder-induced critical behavior in driven diffusive systems Disorder-induced critical behavior in driven diffusive systems

1999-12-14

arxiv.org/abs/cond-mat/9912248v1

Phys. Rev. E 58, 168 (1998)

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1103/PhysRevE.58.168

Using dynamic renormalization group we study the transport in driven diffusive systems in the presence of quenched random drift velocity with long-range correlations along the transport direction. In dimensions $d\mathopen< 4$ we find fixed points representing novel universality classes of disorder-dominated self-organized criticality, and a continuous phase transition at a critical variance of disorder. Numerical values of the scaling exponents characterizing the distributions of relaxation clusters are in good agreement with the exponents measured in natural river networks.

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