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Steady state and relaxation spectrum of the Oslo rice-pile model

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  • Dhar, Deepak

Abstract

We show that the one-dimensional Oslo rice-pile model is a special case of the abelian distributed processors model. The exact steady state of the model is determined. We show that the time evolution operator W for the system satisfies the equation Wn+1=Wn where n=L(L+1)/2 for a pile with L sites. This implies that W has only one eigenvalue 1 corresponding to the steady state, and all other eigenvalues are exactly zero. Also, all connected time-dependent correlation functions in the steady state of the pile are exactly zero for time difference greater than n. Generalization to other abelian critical height models where the critical thresholds are randomly reset after each toppling is briefly discussed.

Suggested Citation

  • Dhar, Deepak, 2004. "Steady state and relaxation spectrum of the Oslo rice-pile model," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 340(4), pages 535-543.
    • Handle: RePEc:eee:phsmap:v:340:y:2004:i:4:p:535-543
    DOI: 10.1016/j.physa.2004.05.003
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