Brownian Motion on Compact Manifolds: Cover Time and Late Points
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1. | Title | Title of document | Brownian Motion on Compact Manifolds: Cover Time and Late Points |
2. | Creator | Author's name, affiliation, country | Amir Dembo; Stanford University |
2. | Creator | Author's name, affiliation, country | Yuval Peres; University of California, Berkeley |
2. | Creator | Author's name, affiliation, country | Jay Rosen; College of Staten Island, CUNY |
3. | Subject | Discipline(s) | |
3. | Subject | Keyword(s) | Brownian motion, manifold, cover time, Wiener sausage. |
3. | Subject | Subject classification | 60J65 |
4. | Description | Abstract | Let $M$ be a smooth, compact, connected Riemannian manifold of dimension $d>2$ and without boundary. Denote by $T(x,r)$ the hitting time of the ball of radius $r$ centered at $x$ by Brownian motion on $M$. Then, $C_r(M)=\sup_{x \in M} T(x,r)$ is the time it takes Brownian motion to come within $r$ of all points in $M$. We prove that $C_r(M)/(r^{2-d}|\log r|)$ tends to $\gamma_d V(M)$ almost surely as $r\to 0$, where $V(M)$ is the Riemannian volume of $M$. We also obtain the ``multi-fractal spectrum'' $f(\alpha)$ for ``late points'', i.e., the dimension of the set of $\alpha$-late points $x$ in $M$ for which $\limsup_{r\to 0} T(x,r)/ (r^{2-d}|\log r|) = \alpha >0$. |
5. | Publisher | Organizing agency, location | |
6. | Contributor | Sponsor(s) | |
7. | Date | (YYYY-MM-DD) | 2003-08-25 |
8. | Type | Status & genre | Peer-reviewed Article |
8. | Type | Type | |
9. | Format | File format | |
10. | Identifier | Uniform Resource Identifier | http://ejp.ejpecp.org/article/view/139 |
10. | Identifier | Digital Object Identifier | 10.1214/EJP.v8-139 |
11. | Source | Journal/conference title; vol., no. (year) | Electronic Journal of Probability; Vol 8 |
12. | Language | English=en | |
14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
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