Sufficient and Necessary Criteria for Existence of Pullback Attractors for Non-compact Random Dynamical Systems

Abstract

We study pullback attractors of non-autonomous non-compact dynamical systems generated by differential equations with non-autonomous deterministic as well as stochastic forcing terms. We first introduce the concepts of pullback attractors and asymptotic compactness for such systems. We then prove a sufficient and necessary condition for existence of pullback attractors. We also introduce the concept of complete orbits for this sort of systems and use these special solutions to characterize the structures of pullback attractors. For random systems containing periodic deterministic forcing terms, we show the pullback attractors are also periodic. As an application of the abstract theory, we prove the existence of a unique pullback attractor for Reaction-Diffusion equations on ${\mathbb{R}}^n$ with both deterministic and random external terms. Since Sobolev embeddings are not compact on unbounded domains, the uniform estimates on the tails of solutions are employed to establish the asymptotic compactness of solutions.

References added

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• Periodic Random Attractors for Stochastic Navier-Stokes Equations on Unbounded Domains
• Random Attractors for the Stochastic Benjamin-Bona-Mahony Equation on Unbounded Domains
• Asymptotic Behavior of Stochastic Wave Equations with Critical Exponents on R^3
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Cited by in corpus (1)

• Existence and Upper Semicontinuity of Attractors for Stochastic Equations with Deterministic Non-autonomous Terms