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Boundary fluxes for non-local diffusion

C. Cortazar, M. Elgueta, J. D. Rossi, N. Wolanski

math.AParXiv:math/0607057

Abstract

We study a nonlocal diffusion operator in a bounded smooth domain prescribing the flux through the boundary. This problem may be seen as a generalization of the usual Neumann problem for the heat equation. First, we prove existence, uniqueness and a comparison principle. Next, we study the behavior of solutions for some prescribed boundary data including blowing up ones. Finally, we look at a nonlinear flux boundary condition.

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