Rocky Mountain Journal of Mathematics
- Rocky Mountain J. Math.
- Volume 49, Number 4 (2019), 1307-1334.
Well-posedness of semilinear strongly damped wave equations with fractional diffusion operators and $C^0$ potentials on arbitrary bounded domains
We examine the well-posedness of a strongly damped wave equation equipped with fractional diffusion operators. Ranges on the orders of the diffusion operators are determined in connection with global well-posedness of mild solutions or the global existence of weak solutions. Local existence proofs employ either semigroup methods or a Faedo-Galerkin scheme, depending on the type of solution sought. Mild solutions arising from semigroup methods are either analytic or of Gevrey class; the former produce a gradient system. We also determine the critical exponent for the nonlinear term depending on the orders of the fractional diffusion operators. Thanks to the nonlocal presentation of the fractional diffusion operators, we are able to work on arbitrary bounded domains. The nonlinear potential is only assumed to be continuous while satisfying a suitable growth condition.
Rocky Mountain J. Math., Volume 49, Number 4 (2019), 1307-1334.
First available in Project Euclid: 29 August 2019
Permanent link to this document
Digital Object Identifier
Mathematical Reviews number (MathSciNet)
Zentralblatt MATH identifier
Primary: 35L71: Semilinear second-order hyperbolic equations 35L20: Initial-boundary value problems for second-order hyperbolic equations
Secondary: 35Q74: PDEs in connection with mechanics of deformable solids 74H40.
Shomberg, Joseph L. Well-posedness of semilinear strongly damped wave equations with fractional diffusion operators and $C^0$ potentials on arbitrary bounded domains. Rocky Mountain J. Math. 49 (2019), no. 4, 1307--1334. doi:10.1216/RMJ-2019-49-4-1307. https://projecteuclid.org/euclid.rmjm/1567044041