Regularity of local minimizers of the interaction energy via obstacle problems

Abstract

The repulsion strength at the origin for repulsive/attractive potentials determines the regularity of local minimizers of the interaction energy. In this paper, we show that if this repulsion is like Newtonian or more singular than Newtonian (but still locally integrable), then the local minimizers must be locally bounded densities (and even continuous for more singular than Newtonian repulsion). We prove this (and some other regularity results) by first showing that the potential function associated to a local minimizer solves an obstacle problem and then by using classical regularity results for such problems.

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Cited by in corpus (5)

• Existence of Compactly Supported Global Minimisers for the Interaction Energy
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• Some Free Boundary Problems involving Nonlocal Diffusion and Aggregation
• Convergence of regularized nonlocal interaction energies
• On weak solutions to the 2D Savage-Hutter model of the motion of a gravity driven avalanche flow