Invariant measures for stochastic Cauchy problems with asymptotically unstable drift semigroup
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1. | Title | Title of document | Invariant measures for stochastic Cauchy problems with asymptotically unstable drift semigroup |
2. | Creator | Author's name, affiliation, country | Onno van Gaans; Leiden University |
2. | Creator | Author's name, affiliation, country | Jan van Neerven; Technical University of Delft |
3. | Subject | Discipline(s) | |
3. | Subject | Keyword(s) | Invariant measures, stochastic evolution equations in Hilbert spaces |
3. | Subject | Subject classification | 35R15, 47D06, 60H05 |
4. | Description | Abstract | We investigate existence and permanence properties of invariant measures for abstract stochastic Cauchy problems of the form $$dU(t) = (AU(t)+f)\,dt + B\,dW_H(t), \ \ t\ge 0,$$ governed by the generator $A$ of an asymptotically unstable $C_0$-semigroup on a Banach space $E$. Here $f \in E$ is fixed, $W_H$ is a cylindrical Brownian motion over a separable real Hilbert space $H$, and $B$ is a bounded operator from $H$ to $E$. We show that if $E$ does not contain a copy of $c_0$, such invariant measures fail to exist generically but may exist for a dense set of operators $B$. It turns out that many results on invariant measures which hold under the assumption of uniform exponential stability of $S$ break down without this assumption. |
5. | Publisher | Organizing agency, location | |
6. | Contributor | Sponsor(s) | Research Training Network HPRN-CT-2002-00281 (authors 1 and 2); NWO VIDI subsidie 639.032.201 (author 2) |
7. | Date | (YYYY-MM-DD) | 2006-03-29 |
8. | Type | Status & genre | Peer-reviewed Article |
8. | Type | Type | |
9. | Format | File format | |
10. | Identifier | Uniform Resource Identifier | http://ecp.ejpecp.org/article/view/1184 |
10. | Identifier | Digital Object Identifier | 10.1214/ECP.v11-1184 |
11. | Source | Journal/conference title; vol., no. (year) | Electronic Communications in Probability; Vol 11 |
12. | Language | English=en | |
14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
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