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Parabolic Anderson model with rough noise in space and rough initial conditions. (English) Zbl 1506.60061

Summary: In this note, we consider the parabolic Anderson model on \(\mathbb{R}_+\times \mathbb{R}\), driven by a Gaussian noise which is fractional in time with index \(H_0 > 1/ 2\) and fractional in space with index \(0<H< 1/ 2\) such that \(H_0 +H> 3/4\). Under a general condition on the initial data, we prove the existence and uniqueness of the mild solution and obtain its exponential upper bounds in time for all \(p\)-th moments with \(p\geq 2\).

MSC:

60H15 Stochastic partial differential equations (aspects of stochastic analysis)
60H07 Stochastic calculus of variations and the Malliavin calculus

Software:

DLMF

References:

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