{ "id": "cond-mat/0511237", "version": "v1", "published": "2005-11-09T18:06:24.000Z", "updated": "2005-11-09T18:06:24.000Z", "title": "Probability distribution of residence times of grains in models of ricepiles", "authors": [ "Punyabrata Pradhan", "Deepak Dhar" ], "comment": "13 pages, 23 figures, Submitted to Phys. Rev. E", "journal": "Phys. Rev. E 73, 021303 (2006).", "doi": "10.1103/PhysRevE.73.021303", "categories": [ "cond-mat.stat-mech", "cond-mat.soft" ], "abstract": "We study the probability distribution of residence time of a grain at a site, and its total residence time inside a pile, in different ricepile models. The tails of these distributions are dominated by the grains that get deeply buried in the pile. We show that, for a pile of size $L$, the probabilities that the residence time at a site or the total residence time is greater than $t$, both decay as $1/t(\\ln t)^x$ for $L^{\\omega} \\ll t \\ll \\exp(L^{\\gamma})$ where $\\gamma$ is an exponent $ \\ge 1$, and values of $x$ and $\\omega$ in the two cases are different. In the Oslo ricepile model we find that the probability that the residence time $T_i$ at a site $i$ being greater than or equal to $t$, is a non-monotonic function of $L$ for a fixed $t$ and does not obey simple scaling. For model in $d$ dimensions, we show that the probability of minimum slope configuration in the steady state, for large $L$, varies as $\\exp(-\\kappa L^{d+2})$ where $\\kappa$ is a constant, and hence $ \\gamma = d+2$.", "revisions": [ { "version": "v1", "updated": "2005-11-09T18:06:24.000Z" } ], "analyses": { "keywords": [ "probability distribution", "total residence time inside", "minimum slope configuration", "oslo ricepile model", "non-monotonic function" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. E" }, "note": { "typesetting": "TeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable" } } }