Coupling and strong Feller for jump processes on Banach spaces

Feng-Yu Wang and Jian Wang

Stochastic Processes and their Applications, 2013, vol. 123, issue 5, 1588-1615

Abstract: By using lower bound conditions of the Lévy measure w.r.t. a nice reference measure, the coupling and strong Feller properties are investigated for the Markov semigroup associated with a class of linear SDEs driven by (non-cylindrical) Lévy processes on a Banach space. Unlike in the finite-dimensional case where these properties have also been confirmed for Lévy processes without drift, in the infinite-dimensional setting the appearance of a drift term is essential to ensure the quasi-invariance of the process by shifting the initial data. Gradient estimates and exponential convergence are also investigated. The main results are illustrated by specific models on the Wiener space and separable Hilbert spaces.

Keywords: Coupling; Strong Feller; Lévy process; Wiener space (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1016/j.spa.2013.01.004

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