The dynamical Schrödinger problem in abstract metric spaces

Abstract

In this paper we introduce the dynamical Schrödinger problem on abstract metric spaces, defined for a wide class of entropy and Fisher information functionals. Under very mild assumptions we prove a generic Gamma-convergence result towards the geodesic problem as the noise parameter $\epsilon \downarrow 0$. We also investigate the connection with geodesic convexity of the driving entropy, and study the dependence of the entropic cost on the parameter $\epsilon$. Some examples and applications are discussed.

Accepted in Advances in Mathematics