Title:
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Long-tailed trapping times and Lévy flights in a self-organized critical granular system
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Author:
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Boguñá, Marián; Corral, Álvaro
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Other authors:
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Universitat de Barcelona |
Abstract:
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We present a continuous time random walk model for the scale-invariant transport found in a self-organized critical rice pile [K. Christensen et al., Phys. Rev. Lett. 77, 107 (1996)]. From our analytical results it is shown that the dynamics of the experiment can be explained in terms of Lvy flights for the grains and a long-tailed distribution of trapping times. Scaling relations for the exponents of these distributions are obtained. The predicted microscopic behavior is confirmed by means of a cellular automaton model. |
Subject(s):
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-Física estadística -Equacions d'estat -Statistical physics -Equations of state |
Rights:
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(c) American Physical Society, 1997
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Document type:
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Article Article - Published version |
Published by:
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American Physical Society
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