{ "id": "0901.4393", "version": "v1", "published": "2009-01-28T02:42:21.000Z", "updated": "2009-01-28T02:42:21.000Z", "title": "Excited against the tide: A random walk with competing drifts", "authors": [ "Mark Holmes" ], "comment": "10 pages", "categories": [ "math.PR", "math-ph", "math.MP" ], "abstract": "We study a random walk that has a drift $\\frac{\\beta}{d}$ to the right when located at a previously unvisited vertex and a drift $\\frac{\\mu}{d}$ to the left otherwise. We prove that in high dimensions, for every $\\mu$, the drift to the right is a strictly increasing and continuous function of $\\beta$, and that there is precisely one value $\\beta_0(\\mu,d)$ for which the resulting speed is zero.", "revisions": [ { "version": "v1", "updated": "2009-01-28T02:42:21.000Z" } ], "analyses": { "subjects": [ "60K35", "82B41" ], "keywords": [ "random walk", "competing drifts", "high dimensions", "continuous function" ], "note": { "typesetting": "TeX", "pages": 10, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2009arXiv0901.4393H" } } }