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arXiv 0909.2093math-phmath.APmath.MP
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压力条件下阻尼波动方程的能量衰减

Energy decay for the damped wave equation under a pressure condition

Emmanuel Schenck

摘要:

我们建立了负曲率流形上阻尼波方程在实轴附近存在谱隙的条件。这一结果在拓扑压力关于测地线流的负性所表示的动力学条件下成立。作为一个应用程序,我们显示了指数衰减的能量为所有的初始数据充分定期。这种衰减由接近实轴的有限个本征值的虚部控制。

英文摘要:

We establish the presence of a spectral gap near the real axis for the damped wave equation on a manifold with negative curvature. This results holds under a dynamical condition expressed by the negativity of a topological pressure with respect to the geodesic flow. As an application, we show an exponential decay of the energy for all initial data sufficiently regular. This decay is governed by the imaginary part of a finite number of eigenvalues close to the real axis.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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