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Well-posedness for nonlinear SPDEs with strongly continuous perturbation

Published online by Cambridge University Press:  11 March 2020

Guy Vallet
Affiliation:
LMAP UMR CNRS 5142, IPRA BP 1155, 64013 Pau Cedex, France (guy.vallet@univ-pau.fr)
Aleksandra Zimmermann
Affiliation:
Faculty of Mathematics, Thea-Leymann-Str. 9, 45127 Essen, Germany (aleksandra.zimmermann@uni-due.de)
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Abstract

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We consider the well-posedness of a stochastic evolution problem in a bounded Lipschitz domain D ⊂ ℝd with homogeneous Dirichlet boundary conditions and an initial condition in L2(D). The main technical difficulties in proving the result of existence and uniqueness of a solution arise from the nonlinear diffusion-convection operator in divergence form which is given by the sum of a Carathéodory function satisfying p-type growth associated with coercivity assumptions and a Lipschitz continuous perturbation. In particular, we consider the case 1 < p < 2 with an appropriate lower bound on p determined by the space dimension. Another difficulty arises from the fact that the additive stochastic perturbation with values in L2(D) on the right-hand side of the equation does not inherit the Sobolev spatial regularity from the solution as in the multiplicative noise case.

Information

Type
Research Article
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
Copyright © The Author(s), 2020. Published by Cambridge University Press