# Marginals with finite repulsive cost

created by bindini on 07 Dec 2017

[BibTeX]

Preprint

Inserted: 7 dec 2017

Year: 2017

ArXiv: 1702.06301 PDF

Abstract:

We consider a multimarginal transport problem with repulsive cost, where the marginals are all equal to a fixed probability $\rho \in \mathcal{P}(\mathbb{R}^d)$. We prove that, if the concentration of $\rho$ is less than $1/N$, then the problem has a solution of finite cost. The result is sharp, in the sense that there exists $\rho$ with concentration $1/N$ for which $C(\rho) = \infty$.

Keywords: Optimal transport, Repulsive potentials

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