Abstract
We introduce and study a new optimal transport problem on a bounded domain \({{\bar{\Omega }}}\subset {\mathbb {R}}^d\), defined via a dynamical Benamou–Brenier formulation. The model handles differently the motion in the interior and on the boundary, and penalizes the transfer of mass between the two. The resulting distance interpolates between classical optimal transport on \({{\bar{\Omega }}}\) on the one hand, and on the other hand between two independent optimal transport problems set on \(\Omega \) and \({\partial \Omega }\).
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Acknowledgements
The author warmly thanks C. Cancès and B. Merlet for discussions pertaining to this work, and D. Vorotnikov for his help with the proof of Theorem 4. This work was funded by the Portuguese Science Foundation through FCT Project PTDC/MAT-STA/28812/2007 SchröMoka.
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Communicated by A. Malchiodi.
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Monsaingeon, L. A new transportation distance with bulk/interface interactions and flux penalization. Calc. Var. 60, 101 (2021). https://doi.org/10.1007/s00526-021-01946-2
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DOI: https://doi.org/10.1007/s00526-021-01946-2
Keywords
- Dynamical optimal transport
- Benamou–Brenier formulations
- Unbalanced optimal transport
- Wasserstein distance
- Wasserstein–Fisher–Rao metric
- Coupled Hamilton–Jacobi equations
- Bulk/interface interaction