{ "id": "0708.2101", "version": "v4", "published": "2007-08-15T20:41:26.000Z", "updated": "2008-02-25T15:44:58.000Z", "title": "Distribution of the time at which the deviation of a Brownian motion is maximum before its first-passage time", "authors": [ "Julien Randon-Furling", "Satya N. Majumdar" ], "comment": "13 pages, 5 figures. Published in Journal of Statistical Mechanics: Theory and Experiment (J. Stat. Mech. (2007) P10008, doi:10.1088/1742-5468/2007/10/P10008)", "journal": "Journal of Statistical Mechanics: Theory and Experiment (2007) P10008", "doi": "10.1088/1742-5468/2007/10/P10008", "categories": [ "cond-mat.stat-mech", "math.PR" ], "abstract": "We calculate analytically the probability density $P(t_m)$ of the time $t_m$ at which a continuous-time Brownian motion (with and without drift) attains its maximum before passing through the origin for the first time. We also compute the joint probability density $P(M,t_m)$ of the maximum $M$ and $t_m$. In the driftless case, we find that $P(t_m)$ has power-law tails: $P(t_m)\\sim t_m^{-3/2}$ for large $t_m$ and $P(t_m)\\sim t_m^{-1/2}$ for small $t_m$. In presence of a drift towards the origin, $P(t_m)$ decays exponentially for large $t_m$. The results from numerical simulations are in excellent agreement with our analytical predictions.", "revisions": [ { "version": "v4", "updated": "2008-02-25T15:44:58.000Z" } ], "analyses": { "keywords": [ "first-passage time", "distribution", "continuous-time brownian motion", "joint probability density", "excellent agreement" ], "tags": [ "journal article" ], "publication": { "journal": "Journal of Statistical Mechanics: Theory and Experiment", "year": 2007, "month": "Oct", "volume": 2007, "number": 10, "pages": 10008 }, "note": { "typesetting": "TeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2007JSMTE..10....8R" } } }