A General Construction to Stationary Weak Solutions of Parabolic SPDEs

Details A General Construction to Stationary Weak Solutions of Parabolic SPDEs A General Construction to Stationary Weak Solutions of Parabolic SPDEs

2010-03-21

arxiv.org/abs/1003.3978v2

Mathematics

Probability

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Scientific paper

In this paper we construct the stationary weak solutions of parabolic SPDEs by a general infinite horizon backward doubly stochastic differential equations (BDSDEs for short) with non-degenerate terminal functions. For this, we first study the existence, uniqueness and stationarity of solutions of such kind of BDSDEs in weighted $L^p(dx)\bigotimes L^2(dx)$ space ($p>2$). Then the corresponding stationary solutions of parabolic SPDEs can be obtained by the connection between the solutions of BDSDEs in weighted $L^p(dx)\bigotimes L^2(dx)$ space and the weak solutions of parabolic SPDEs. This result shows that the stationary solutions of SPDEs can be constructed by their corresponding infinite horizon BDSDEs with any Lipschitz continuous terminal function.

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