{ "id": "cond-mat/0202135", "version": "v2", "published": "2002-02-08T09:19:04.000Z", "updated": "2002-05-29T09:58:24.000Z", "title": "Critical Behavior and Lack of Self Averaging in the Dynamics of the Random Potts Model in Two Dimensions", "authors": [ "C. Deroulers", "A. P. Young" ], "comment": "9 pages, 13 figures, final published version", "journal": "Phys. Rev. B 66, 14438 (2002)", "doi": "10.1103/PhysRevB.66.014438", "categories": [ "cond-mat.dis-nn", "cond-mat.stat-mech" ], "abstract": "We study the dynamics of the q-state random bond Potts ferromagnet on the square lattice at its critical point by Monte Carlo simulations with single spin-flip dynamics. We concentrate on q=3 and q=24 and find, in both cases, conventional, rather than activated, dynamics. We also look at the distribution of relaxation times among different samples, finding different results for the two q values. For q=3 the relative variance of the relaxation time tau at the critical point is finite. However, for q=24 this appears to diverge in the thermodynamic limit and it is ln(tau) which has a finite relative variance. We speculate that this difference occurs because the transition of the corresponding pure system is second order for q=3 but first order for q=24.", "revisions": [ { "version": "v2", "updated": "2002-05-29T09:58:24.000Z" } ], "analyses": { "keywords": [ "random potts model", "critical behavior", "self averaging", "q-state random bond potts ferromagnet", "relaxation time" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. B" }, "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable" } } }