首页> 外文期刊>Journal d'analyse mathematique >SOJOURN TIMES, MANIFOLDS WITH INFINITE CYLINDRICAL ENDS, AND AN INVERSE PROBLEM FOR PLANAR WAVEGUIDES
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SOJOURN TIMES, MANIFOLDS WITH INFINITE CYLINDRICAL ENDS, AND AN INVERSE PROBLEM FOR PLANAR WAVEGUIDES

机译:航迹时间,具有无限圆柱端的流形以及平面波导管的逆问题

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摘要

We prove that two particular entries in the scattering matrix for the Dirichlet Laplacian on R x (-gamma, gamma) O determine an analytic strictly convex obstacle O. With an additional symmetry assumption, one entry suffices. Part of the proof is an integral identity involving an entry in the scattering matrix and a distribution related to the fundamental solution of the wave equation. This identity holds for general manifolds with infinite cylindrical ends. A consequence of this is a relationship between the singularities of the Fourier transform of an entry in the scattering matrix and the sojourn times of certain geodesics.
机译:我们证明了散射矩阵中Dixletlet Laplacian在R x(-gamma,gamma) O上的两个特定条目确定了解析的严格凸障碍O。在具有附加对称性的前提下,一个条目就足够了。证明的一部分是完整的恒等式,涉及散射矩阵中的一项以及与波动方程的基本解相关的分布。此标识适用于具有无限圆柱端的通用歧管。其结果是散射矩阵中条目的傅立叶变换的奇异性与某些测地线的停留时间之间的关系。

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