{ "id": "1206.6133", "version": "v2", "published": "2012-06-26T22:06:11.000Z", "updated": "2013-11-04T01:02:30.000Z", "title": "Influence of the interaction range on the thermostatistics of a classical many-body system", "authors": [ "Leonardo J. L. Cirto", "Vladimir R. V. Assis", "Constantino Tsallis" ], "comment": "15 pages, 13 figures", "journal": "Physica A: Statistical Mechanics and its Applications, Volume 393, 1 January 2014, Pages 286--296", "doi": "10.1016/j.physa.2013.09.002", "categories": [ "cond-mat.stat-mech" ], "abstract": "We numerically study a one-dimensional system of $N$ classical localized planar rotators coupled through interactions which decay with distance as $1/r^\\alpha$ ($\\alpha \\ge 0$). The approach is a first principle one (\\textit{i.e.}, based on Newton's law), and yields the probability distribution of momenta. For $\\alpha$ large enough and $N\\gg1$ we observe, for longstanding states, the Maxwellian distribution, landmark of Boltzmann-Gibbs thermostatistics. But, for $\\alpha$ small or comparable to unity, we observe instead robust fat-tailed distributions that are quite well fitted with $q$-Gaussians. These distributions extremize, under appropriate simple constraints, the nonadditive entropy $S_q$ upon which nonextensive statistical mechanics is based. The whole scenario appears to be consistent with nonergodicity and with the thesis of the $q$-generalized Central Limit Theorem.", "revisions": [ { "version": "v2", "updated": "2013-11-04T01:02:30.000Z" } ], "analyses": { "keywords": [ "classical many-body system", "interaction range", "thermostatistics", "localized planar rotators", "instead robust fat-tailed distributions" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1206.6133C" } } }