A perturbative homogenization theorem for viscous Hamilton-Jacobi equations with u/epsilon-dependent Hamiltonians, proved via periodic-parabolic correctors constructed by Fredholm theory and a fixed point argument.
Homogenization for Space-Time-Dependent KPP Reaction-Diffusion Equations and G-Equations
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abstract
We prove stochastic homogenization for reaction-advection-diffusion equations with random space-time-dependent KPP reactions with temporal correlations that are decaying in an appropriate sense. We show that the limiting homogenized dynamic has the simple form of spreading with some deterministic direction-dependent speeds from the support of the initial datum. We obtain analogous results for G-equations with random flame speeds and incompressible background advections. Important ingredients in our proofs are a non-autonomous subadditive theorem and the principle of virtual linearity for KPP reactions from the companion papers [30, 35].
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Homogenization of Viscous Sublinear Hamilton--Jacobi Equations with $u/\epsilon$-Dependence
A perturbative homogenization theorem for viscous Hamilton-Jacobi equations with u/epsilon-dependent Hamiltonians, proved via periodic-parabolic correctors constructed by Fredholm theory and a fixed point argument.