Improved moment estimates for invariant measures of semilinear diffusions in Hilbert spaces and applications
Abdelhadi Es-Sarhir and Wilhelm Stannat
Arxiv ID: 0911.1206•Last updated: 11/15/2022
We study regularity properties for invariant measures of semilinear diffusions in a separable Hilbert space. Based on a pathwise estimate for the underlying stochastic convolution, we prove a priori estimates on such invariant measures. As an application, we combine such estimates with a new technique to prove the $L^1$-uniqueness of the induced Kolmogorov operator, defined on a space of cylindrical functions. Finally, examples of stochastic Burgers equations and thin-film growth models are given to illustrate our abstract result.
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