Moment estimates for the stochastic heat equation on Cartan-Hadamard manifolds
Year: 2025
Type: article
Abstract: We study the effect of curvature on the Parabolic Anderson model by posing it over a Cartan-Hadamard manifold. We first construct a family of noises white in time and colored in space indexed by a regularity parameter α , which we use to explore regularity requirements for well-posedness. Then, we show that conditions on the heat kernel imply an exponential in time upper bound for the moments of the solution, and a lower bound for sectional curvature implies a corresponding lower bound. These results hold if the noise is strong enough, where the needed strength of the noise is affected by sectional curvature.
Authors: Fabrice Baudoin, Hongyi Chen, Cheng Ouyang
Institutions: Aarhus University, University of Illinois Chicago
Language: English
Subfield: Mathematical Physics
Field: Mathematics
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,190
OpenAlex ID: W4411329690