Gaussian Upper Bounds for Heat Kernels of Continuous Time Simple Random Walks
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1. | Title | Title of document | Gaussian Upper Bounds for Heat Kernels of Continuous Time Simple Random Walks |
2. | Creator | Author's name, affiliation, country | Matthew Folz; University of British Columbia; Canada |
3. | Subject | Discipline(s) | |
3. | Subject | Keyword(s) | random walk; heat kernel; Gaussian upper bound; random walk in random environment |
3. | Subject | Subject classification | 60G50; 30K08; 60K37 |
4. | Description | Abstract | We consider continuous time simple random walks with arbitrary speed measure $\theta$ on infinite weighted graphs. Write $p_t(x,y)$ for the heat kernel of this process. Given on-diagonal upper bounds for the heat kernel at two points $x_1,x_2$, we obtain a Gaussian upper bound for $p_t(x_1,x_2)$. The distance function which appears in this estimate is not in general the graph metric, but a new metric which is adapted to the random walk. Long-range non-Gaussian bounds in this new metric are also established. Applications to heat kernel bounds for various models of random walks in random environments are discussed. |
5. | Publisher | Organizing agency, location | |
6. | Contributor | Sponsor(s) | NSERC |
7. | Date | (YYYY-MM-DD) | 2011-09-12 |
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/926 |
10. | Identifier | Digital Object Identifier | 10.1214/EJP.v16-926 |
11. | Source | Journal/conference title; vol., no. (year) | Electronic Journal of Probability; Vol 16 |
12. | Language | English=en | |
14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
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