Regularity in the two-phase Bernoulli problem for the $p$-Laplace operator

Abstract

We show that any minimizer of the well-known ACF functional (for the $p$-Laplacian) is a viscosity solution. This allows us to establish a uniform flatness decay at the two-phase free boundary points to improve the flatness, that boils down to $C^{1,\eta }$ regularity of the flat part of the free boundary. This result, in turn, is used to prove the Lipschitz regularity of minimizers by a dichotomy argument.

arXiv admin note: substantial text overlap with arXiv:1911.02165 by other authors

References in corpus (1)

• Regularity of Lipschitz free boundaries for a $p(x)$-Laplacian problem with right hand side