{ "id": "1502.04238", "version": "v1", "published": "2015-02-14T20:06:41.000Z", "updated": "2015-02-14T20:06:41.000Z", "title": "Sharp thresholds for Gibbs-non-Gibbs transition in the fuzzy Potts models with a Kac-type interaction", "authors": [ "B. Jahnel", "C. Kuelske" ], "comment": "17 pages", "categories": [ "math.PR" ], "abstract": "We investigate the Gibbs properties of the fuzzy Potts model on the d-dimensional torus with Kac interaction. We use a variational approach for profiles inspired by that of Fernandez, den Hollander and Mart{\\i}nez for their study of the Gibbs-non-Gibbs transitions of a dynamical Kac-Ising model on the torus. As our main result, we show that the mean-field thresholds dividing Gibbsian from non-Gibbsian behavior are sharp in the fuzzy Kac-Potts model. On the way to this result we prove a large deviation principle for color profiles with diluted total mass densities and use monotocity arguments.", "revisions": [ { "version": "v1", "updated": "2015-02-14T20:06:41.000Z" } ], "analyses": { "keywords": [ "fuzzy potts model", "gibbs-non-gibbs transition", "sharp thresholds", "kac-type interaction", "diluted total mass densities" ], "note": { "typesetting": "TeX", "pages": 17, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv150204238J" } } }