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Asymptotic Behavior for a Class of Logarithmic Wave Equations with Linear Damping

Asymptotic Behavior for a Class of Logarithmic Wave Equations with Linear Damping We consider the initial boundary value problem for a class of logarithmic wave equations with linear damping. By constructing a potential well and using the logarithmic Sobolev inequality, we prove that, if the solution lies in the unstable set or the initial energy is negative, the solution will grow as an exponential function in the $$H^1_0(\Omega )$$ H 0 1 ( Ω ) norm as time goes to infinity. If the solution lies in a smaller set compared with the stable set, we can estimate the decay rate of the energy. These results are extensions of earlier results. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Mathematics and Optimization Springer Journals

Asymptotic Behavior for a Class of Logarithmic Wave Equations with Linear Damping

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References (30)

Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer Science+Business Media New York
Subject
Mathematics; Calculus of Variations and Optimal Control; Optimization; Systems Theory, Control; Theoretical, Mathematical and Computational Physics; Mathematical Methods in Physics; Numerical and Computational Physics, Simulation
ISSN
0095-4616
eISSN
1432-0606
DOI
10.1007/s00245-017-9423-3
Publisher site
See Article on Publisher Site

Abstract

We consider the initial boundary value problem for a class of logarithmic wave equations with linear damping. By constructing a potential well and using the logarithmic Sobolev inequality, we prove that, if the solution lies in the unstable set or the initial energy is negative, the solution will grow as an exponential function in the $$H^1_0(\Omega )$$ H 0 1 ( Ω ) norm as time goes to infinity. If the solution lies in a smaller set compared with the stable set, we can estimate the decay rate of the energy. These results are extensions of earlier results.

Journal

Applied Mathematics and OptimizationSpringer Journals

Published: Jun 7, 2017

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