Ordered Random Walks
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1. | Title | Title of document | Ordered Random Walks |
2. | Creator | Author's name, affiliation, country | Peter Eichelsbacher; University of Bochum |
2. | Creator | Author's name, affiliation, country | Wolfgang König; University of Leipzig |
3. | Subject | Discipline(s) | |
3. | Subject | Keyword(s) | Dyson's Brownian motions; Vandermonde determinant; Doob h-transform; non-colliding random walks; non-intersecting random processes; fluctuation theory. |
3. | Subject | Subject classification | 60G50, 60F17 |
4. | Description | Abstract | We construct the conditional version of $k$ independent and identically distributed random walks on $R$ given that they stay in strict order at all times. This is a generalisation of so-called non-colliding or non-intersecting random walks, the discrete variant of Dyson's Brownian motions, which have been considered yet only for nearest-neighbor walks on the lattice. Our only assumptions are moment conditions on the steps and the validity of the local central limit theorem. The conditional process is constructed as a Doob $h$-transform with some positive regular function $V$ that is strongly related with the Vandermonde determinant and reduces to that function for simple random walk. Furthermore, we prove an invariance principle, i.e., a functional limit theorem towards Dyson's Brownian motions, the continuous analogue. |
5. | Publisher | Organizing agency, location | |
6. | Contributor | Sponsor(s) | Deutsche Forschungsgemeinschaft via SFB/TR 12 |
7. | Date | (YYYY-MM-DD) | 2008-08-14 |
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/539 |
10. | Identifier | Digital Object Identifier | 10.1214/EJP.v13-539 |
11. | Source | Journal/conference title; vol., no. (year) | Electronic Journal of Probability; Vol 13 |
12. | Language | English=en | |
14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
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