{ "id": "cond-mat/0509187", "version": "v2", "published": "2005-09-07T21:18:38.000Z", "updated": "2006-01-04T18:00:33.000Z", "title": "Stochastic Loewner evolution driven by Levy processes", "authors": [ "I. Rushkin", "P. Oikonomou", "L. P. Kadanoff", "I. A. Gruzberg" ], "comment": "Published version, minor typos corrected, added references", "journal": "J. Stat. Mech. (2006) P01001", "doi": "10.1088/1742-5468/2006/01/P01001", "categories": [ "cond-mat.stat-mech" ], "abstract": "Standard stochastic Loewner evolution (SLE) is driven by a continuous Brownian motion, which then produces a continuous fractal trace. If jumps are added to the driving function, the trace branches. We consider a generalized SLE driven by a superposition of a Brownian motion and a stable Levy process. The situation is defined by the usual SLE parameter, $\\kappa$, as well as $\\alpha$ which defines the shape of the stable Levy distribution. The resulting behavior is characterized by two descriptors: $p$, the probability that the trace self-intersects, and $\\tilde{p}$, the probability that it will approach arbitrarily close to doing so. Using Dynkin's formula, these descriptors are shown to change qualitatively and singularly at critical values of $\\kappa$ and $\\alpha$. It is reasonable to call such changes ``phase transitions''. These transitions occur as $\\kappa$ passes through four (a well-known result) and as $\\alpha$ passes through one (a new result). Numerical simulations are then used to explore the associated touching and near-touching events.", "revisions": [ { "version": "v2", "updated": "2006-01-04T18:00:33.000Z" } ], "analyses": { "keywords": [ "stochastic loewner evolution driven", "levy processes", "standard stochastic loewner evolution", "brownian motion", "usual sle parameter" ], "tags": [ "journal article" ], "publication": { "journal": "Journal of Statistical Mechanics: Theory and Experiment", "year": 2006, "month": "Jan", "volume": 2006, "number": 1, "pages": 1001 }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2006JSMTE..01..001R" } } }