Criticality in driven cellular automata with defects

Bosiljka Tadić and Ramakrishna Ramaswamy

Physica A: Statistical Mechanics and its Applications, 1996, vol. 224, issue 1, 188-198

Abstract: We study three models of driven sandpile-type automata in the presence of quenched random defects. When the dynamics is conservative, all these models, termed the random sites (A), random bonds (B), and random slopes (C), self-organize into a critical state. For model C the concentration-dependent exponents are nonuniversal. In the case of nonconservative defects, the asymptotic state is subcritical. Possible defect-mediated nonequilibrium phase transitions are also discussed.

Date: 1996
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:224:y:1996:i:1:p:188-198

DOI: 10.1016/0378-4371(95)00322-3

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