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Tracer Dispersion in a Self-Organized Critical System | | Kim Christensen
; ’{A}lvaro Corral
; Vidar Frette
; Jens Feder
; Torstein J{o}ssang
; | | Date: |
12 Feb 1996 | | Subject: | Condensed Matter; Adaptation and Self-Organizing Systems | cond-mat adap-org nlin.AO | | Abstract: | We have studied experimentally transport properties in a slowly driven granular system which recently was shown to display self-organized criticality [Frette {em et al., Nature} {f 379}, 49 (1996)]. Tracer particles were added to a pile and their transit times measured. The distribution of transit times is a constant with a crossover to a decaying power law. The average transport velocity decreases with system size. This is due to an increase in the active zone depth with system size. The relaxation processes generate coherently moving regions of grains mixed with convection. This picture is supported by considering transport in a $1D$ cellular automaton modeling the experiment. | | Source: | arXiv, cond-mat/9602067 | | Services: | Forum | Review | PDF | Favorites | |
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