Damping-Diffusion-Noise Interactions in the Stochastic Camassa-Holm Equation

In this paper we investigate the effects of the interaction between time-inhomogeneous damping, non-local diffusion, and noise on classical solutions to the Camassa-Holm equation incorporating these features.

First, a local-in-time theory is established, covering the existence, uniqueness, and a blow-up criterion under relatively general conditions for these interacting mechanisms.

Subsequently, we identify different conditions on the interactions between damping, diffusion, and noise that guarantee the global regularity and long-time behaviour of classical solutions.

Notably, we demonstrate the existence of an evolution system of measures, which generalizes the concept of invariant measures to the time-inhomogeneous setting.