Maxwell equations with localized internal damping: strong and polynomial stability
Serge Nicaise , Roland Schnaubelt
Communications in Analysis and Mechanics ›› 2025, Vol. 17 ›› Issue (4) : 849 -877.
We study the Maxwell system with localized conductivity σ and the boundary conditions of a perfect conductor on a simply connected domain Ω, assuming that there are no electric charges off the support of σ. For matrix-valued permittivity ε and permeability µ, we show strong stability of the underlying semigroup by checking the spectral criteria of the Arendt–Batty–Lyubich–V˜u Theorem. If ε = µ = 1, Ω is the cube (0, π)3 and supp σ contains a strip, the semigroup is polynomially stable of rate 1 2. To derive this result, we establish the resolvent estimate of the Borichev–Tomilov Theorem using an orthonormal basis of eigenfunctions of the Maxwell operator for σ = 0.
stability / Maxwell system / localized conductivity / ABLV theorem / Borichev–Tomilov theorem
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