Wasserstein asymptotics for Brownian motion on the flat torus and Brownian interlacements

Mauro Mariani and Dario Trevisan

Stochastic Processes and their Applications, 2025, vol. 183, issue C

Abstract: We study the large time behaviour of the optimal transportation cost towards the uniform distribution, for the occupation measure of a stationary Brownian motion on the flat torus in d dimensions, where the cost of transporting a unit of mass is given by a power of the flat distance. We establish a global upper bound, in terms of the limit for the analogue problem concerning the occupation measure of the Brownian interlacement on Rd. We conjecture that our bound is sharp and that our techniques may allow for similar studies on a larger variety of problems, e.g. general diffusion processes on weighted Riemannian manifolds.

Keywords: Optimal transport; Geometric probability; Brownian interlacements (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.spa.2025.104595

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