{ "id": "1506.07358", "version": "v1", "published": "2015-06-24T13:12:23.000Z", "updated": "2015-06-24T13:12:23.000Z", "title": "A limit theorem for the $L^p$-modulus of continuity of Brownian local time", "authors": [ "Simon Campese" ], "comment": "28 pages", "categories": [ "math.PR" ], "abstract": "We proof a limit theorem for the $L^p$-modulus of continuity of Brownian local time. As special cases for $p=2$ and $p=3$, we obtain previous results by Chen et al. (Ann. Prob. 38, 2010, no. 1) and Rosen~(Stoch. Dyn. 11, 2011, no. 1), which were later reproven by Hu and Nualart~(Electron. Commun. Probab. 14, 2009; Electron. Commun. Probab. 15, 2010) and Rosen~(S\\'eminaire de Probabilit\\'es XLIII, Springer, 2011). In comparison to the previous methods of proof, we follow a fundamentally different approach by exclusively working in the space variable of the Brownian local time, which allows to give a unified argument for arbitrary integer power $p$. The main ingredients are Perkins' semimartingale decomposition, the Kailath-Segall identity and an asymptotic Ray-Knight Theorem by Pitman and Yor.", "revisions": [ { "version": "v1", "updated": "2015-06-24T13:12:23.000Z" } ], "analyses": { "subjects": [ "60F05", "60G44", "60H05" ], "keywords": [ "brownian local time", "limit theorem", "continuity", "arbitrary integer power", "asymptotic ray-knight theorem" ], "note": { "typesetting": "TeX", "pages": 28, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv150607358C" } } }