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Optimal energy decay rates for Klein-Gordon equations wit...
[Submitted on 27 Mar 2026 (v1), last revised 22 May 2026 (this v · 2026-05-25 · via math updates on arXiv.org

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Abstract:We study the long-time behaviour of solutions to a one-dimensional linear Klein-Gordon equation with Kelvin-Voigt damping. One of the interesting features of the equation is that the generator of the associated $C_0$-semigroup has multiple spectral points on the imaginary axis. As our main result, we show that the energy of every possible solution converges to zero as time goes to infinity and, moreover, we provide an optimal polynomial energy decay rate for a certain class of solutions.

Submission history

From: Filippo Dell'Oro [view email]
[v1] Fri, 27 Mar 2026 10:41:18 UTC (16 KB)
[v2] Fri, 22 May 2026 10:39:57 UTC (16 KB)