An Optimal Transport Approach for the Kinetic Bohmian Equation

TL;DR

This paper develops an existence theory for solutions of the kinetic Bohmian equation by formulating it as a Hamiltonian system on a Wasserstein space, including stationary solutions and approximation methods.

Contribution

It introduces a novel Hamiltonian framework for the kinetic Bohmian equation and establishes existence and convergence results for approximate solutions.

Findings

Existence of stationary solutions demonstrated.

Development of an approximation scheme with proven existence.

Convergence of approximate solutions to the kinetic Bohmian equation shown.

Abstract

We study the existence theory of solutions of the kinetic Bohmian equation, a nonlinear Vlasov-type equation proposed for the phase-space formulation of Bohmian mechanics. Our main idea is to interpret the kinetic Bohmian equation as a Hamiltonian system defined on an appropriate Poisson manifold built on a Wasserstein space. We start by presenting an existence theory for stationary solutions of the kinetic Bohmian equation. Afterwards, we develop an approximative version of our Hamiltonian system in order to study its associated flow. We then prove existence of solutions of our approximative version. Finally, we present some convergence results for the approximative system, the aim being to establish that, in the limit, the approximative solution satisfies the kinetic Bohmian equation in a weak sense.