An optimal transport formulation of the Einstein equations of general relativity
Andrea Mondino, Stefan Suhr
Abstract
The goal of the paper is to give an optimal transport formulation of the full Einstein equations of general relativity, linking the (Ricci) curvature of a space-time with the cosmological constant and the energy-momentum tensor. Such an optimal transport formulation is in terms of convexity/concavity properties of the Boltzmann–Shannon entropy along curves of probability measures extremizing suitable optimal transport costs. The result gives a new connection between general relativity and optimal transport; moreover, it gives a mathematical reinforcement of the strong link between general relativity and thermodynamics/information theory that emerged in the physics literature of the last years.
Topics & Concepts
MathematicsEinsteinGeneral relativityTheory of relativityMathematical physicsEinstein equationsTheoretical motivation for general relativityNumerical relativityIntroduction to the mathematics of general relativityTheoretical physicsPhysicsCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsGeometric Analysis and Curvature Flows