Sharp Exponential Decay Rates for Anisotropically Damped Waves
Sharp Exponential Decay Rates for Anisotropically Damped Waves
复制标题
各向异性阻尼波的急剧指数衰减率
DOI:
10.1007/s00023-022-01242-5
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Kleinhenz, Perry
中科院分区:
文献类型:
--
作者:
Keeler, Blake;Kleinhenz, Perry
In this article, we study energy decay of the damped wave equation on compact Riemannian manifolds where the damping coefficient is anisotropic and modeled by a pseudodifferential operator of order zero. We prove that the energy of solutions decays at an exponential rate if and only if the damping coefficient satisfies an anisotropic analogue of the classical geometric control condition, along with a unique continuation hypothesis. Furthermore, we compute an explicit formula for the optimal decay rate in terms of the spectral abscissa and the long-time averages of the principal symbol of the damping over geodesics, in analogy to the work of Lebeau for the isotropic case. We also construct genuinely anisotropic dampings which satisfy our hypotheses on the flat torus.
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DOI:
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发表时间:
2008
期刊:
影响因子:
--
作者:
I. Craig
通讯作者:
I. Craig
DOI:
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发表时间:
1972
期刊:
影响因子:
--
作者:
R. Strichartz
通讯作者:
R. Strichartz
影响因子:
2.4
作者:
N. Burq;C. Zuily
通讯作者:
C. Zuily
DOI:
10.1090/proc/15018
发表时间:
2019-08
期刊:
arXiv: Analysis of PDEs
影响因子:
--
作者:
K. Datchev;Perry Kleinhenz
通讯作者:
K. Datchev;Perry Kleinhenz
DOI:
10.1007/s11854-014-0006-9
发表时间:
2012-06
期刊:
Journal d'Analyse Mathématique
影响因子:
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作者:
H. Christianson;E. Schenck;A. Vasy;J. Wunsch
通讯作者:
H. Christianson;E. Schenck;A. Vasy;J. Wunsch