The Non-Linear Stochastic Wave Equation in High Dimensions
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1. | Title | Title of document | The Non-Linear Stochastic Wave Equation in High Dimensions |
2. | Creator | Author's name, affiliation, country | Daniel Conus; Ecole Polytechnique Fédérale |
2. | Creator | Author's name, affiliation, country | Robert C. Dalang; Ecole Polytechnique Fédérale |
3. | Subject | Discipline(s) | |
3. | Subject | Keyword(s) | Martingale measures; stochastic integration; stochastic wave equation; stochastic partial differential equations; moment formulae; Hölder continuity |
3. | Subject | Subject classification | 60H15; 60H20; 60H05 |
4. | Description | Abstract | We propose an extension of Walsh's classical martingale measure stochastic integral that makes it possible to integrate a general class of Schwartz distributions, which contains the fundamental solution of the wave equation, even in dimensions greater than 3. This leads to a square-integrable random-field solution to the non-linear stochastic wave equation in any dimension, in the case of a driving noise that is white in time and correlated in space. In the particular case of an affine multiplicative noise, we obtain estimates on $p$-th moments of the solution ($p\geq 1$), and we show that the solution is Hölder continuous. The Hölder exponent that we obtain is optimal. |
5. | Publisher | Organizing agency, location | |
6. | Contributor | Sponsor(s) | Swiss National Foundation for Scientific Research |
7. | Date | (YYYY-MM-DD) | 2008-04-12 |
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/500 |
10. | Identifier | Digital Object Identifier | 10.1214/EJP.v13-500 |
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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