paper

Harnack Inequality and Applications for Stochastic Evolution Equations with Monotone Drifts

arXiv:0802.0289 · doi:10.1007/s00028-009-0032-8

Abstract

In this paper, the dimension-free Harnack inequality is proved for the associated transition semigroups to a large class of stochastic evolution equations with monotone drifts. As applications, the ergodicity, hyper-(or ultra-)contractivity and compactness are established for the corresponding transition semigroups. Moreover, the exponential convergence of the transition semigroups to invariant measure and the existence of a spectral gap are also derived. The main results are applied to many concrete stochastic evolution equations such as stochastic reaction-diffusion equations, stochastic porous media equations and the stochastic p-Laplace equation in Hilbert space.

25 pages, to appear in J. Evol. Equ

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