Mean field rough differential equations

Description

We provide in this work a robust solution theory for random rough differential equations of mean field type driven by a random rough path, with mean field interaction in both the drift and diffusivity. Propagation of chaos results for large systems of interacting rough differential equations are obtained as a consequence, with explicit optimal convergence rate. The development of these results requires the introduction of a new rough path-like setting and an associated notion of controlled path. We use crucially Lions' approach to differential calculus on Wasserstein space along the way.

Abstract

International audience

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