Free transmission problems
arXiv:1510.01263 · doi:10.1007/s00220-015-2290-3
Abstract
We study transmission problems with free interfaces from one random medium to another. Solutions are required to solve distinct partial differential equations, $\mbox{L}_{+}$ and $\mbox{L}_{-}$, within their positive and negative sets respectively. A corresponding flux balance from one phase to another is also imposed. We establish existence and bounds of solutions. We also prove that variational solutions are non-degenerate and develop the regularity theory for solutions of such free boundary problems.
Paper from Marcelo Amaral's thesis, distinguished at the 2015 Carlos Gutierrez prize for best thesis