Volume 46, Issue 6 pp. 7067-7107
RESEARCH ARTICLE

Decay property of solutions to the wave equation with space-dependent damping, absorbing nonlinearity, and polynomially decaying data

Yuta Wakasugi

Corresponding Author

Yuta Wakasugi

Laboratory of Mathematics, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, 739-8527 Japan

Correspondence

Yuta Wakasugi, Laboratory of Mathematics, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.

Email: [email protected]

Communicated by: M. Reissig

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First published: 06 January 2023
Citations: 1

Abstract

We study the large time behavior of solutions to the semilinear wave equation with space-dependent damping and absorbing nonlinearity in the whole space or exterior domains. Our result shows how the amplitude of the damping coefficient, the power of the nonlinearity, and the decay rate of the initial data at the spatial infinity determine the decay rates of the energy and the L 2 $$ {L}^2 $$ -norm of the solution. In the appendix, we also give a survey of basic results on the local and global existence of solutions and the properties of weight functions used in the energy method.

CONFLICT OF INTEREST

This work does not have any conflict of interest.

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