PUB - Publikationen an der Universität Bielefeld

We establish a large deviation principle (LDP) for a class of stochastic porous media equations driven by Le'\vy-type noise on a \sigma-finite measure space (E, B(E), \mu ), with the Laplacian replaced by a negative definite self-adjoint operator. One of the main contributions of this paper is that we do not assume the compactness of embeddings in the corresponding Gelfand triple, and to compensate for this generalization, a new procedure is provided. This is the first paper to deal with LDPs for stochastic evolution equations with Le'\vy noise without compactness conditions. The coefficient \Psi is assumed to satisfy nondecreasing Lipschitz nonlinearity, so an important physical problem covered by this case is the Stefan problem. Numerous examples of negative definite selfadjoint operators are applicable to our results, for example, for open E \subset Rd, L = Laplacian or fractional Laplacians (i.e., L = -(-\Delta)\alpha, \alpha \in (0, 1]), and generalized Schro"\dinger operators (i.e., L = \Delta + 2 v\rho \rho \cdot V); Laplacians on fractals is also included.