{ "id": "1609.06854", "version": "v1", "published": "2016-09-22T08:04:48.000Z", "updated": "2016-09-22T08:04:48.000Z", "title": "On the joint distribution of first-passage time and first-passage area of drifted Brownian motion", "authors": [ "Mario Abundo", "Danilo Del Vescovo" ], "comment": "13 pages, 2 figures", "categories": [ "math.PR" ], "abstract": "For drifted Brownian motion $X(t)= x - \\mu t + B_t \\ (\\mu >0)$ starting from $x>0,$ we study the joint distribution of the first-passage time below zero, $\\tau(x),$ and the first-passage area, $A(x),$ swept out by $X$ till the time $\\tau(x).$ In particular, we establish differential equations with boundary conditions for the joint moments $E[\\tau(x)^m A(x)^n],$ and we present an algorithm to find recursively them, for any $m$ and $n.$ Finally, the expected value of the time average of $X$ till the time $\\tau(x)$ is obtained.", "revisions": [ { "version": "v1", "updated": "2016-09-22T08:04:48.000Z" } ], "analyses": { "subjects": [ "60J60", "60H05", "60H10" ], "keywords": [ "drifted brownian motion", "joint distribution", "first-passage time", "first-passage area", "time average" ], "note": { "typesetting": "TeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable" } } }