双调和算子的逆散射和稳定性

IF 1.2 4区 数学 Q2 MATHEMATICS, APPLIED
Siamak Rabieniaharatbar
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引用次数: 0

摘要

We investigate the inverse scattering problem of the perturbed biharmonic operator by studying the recovery process of the magnetic field \begin{document}$ {\mathbf{A}} $\end{document} and the potential field \begin{document}$ V $\end{document} . We show that the high-frequency asymptotic of the scattering amplitude of the biharmonic operator uniquely determines \begin{document}$ {\rm{curl}}\ {\mathbf{A}} $\end{document} and \begin{document}$ V-\frac{1}{2}\nabla\cdot{\mathbf{A}} $\end{document} . We study the near-field scattering problem and show that the high-frequency asymptotic expansion up to an error \begin{document}$ \mathcal{O}(\lambda^{-4}) $\end{document} recovers above two quantities with no additional information about \begin{document}$ {\mathbf{A}} $\end{document} and \begin{document}$ V $\end{document} . We also establish stability estimates for \begin{document}$ {\rm{curl}}\ {\mathbf{A}} $\end{document} and \begin{document}$ V-\frac{1}{2}\nabla\cdot{\mathbf{A}} $\end{document} .
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Inverse scattering and stability for the biharmonic operator
We investigate the inverse scattering problem of the perturbed biharmonic operator by studying the recovery process of the magnetic field \begin{document}$ {\mathbf{A}} $\end{document} and the potential field \begin{document}$ V $\end{document} . We show that the high-frequency asymptotic of the scattering amplitude of the biharmonic operator uniquely determines \begin{document}$ {\rm{curl}}\ {\mathbf{A}} $\end{document} and \begin{document}$ V-\frac{1}{2}\nabla\cdot{\mathbf{A}} $\end{document} . We study the near-field scattering problem and show that the high-frequency asymptotic expansion up to an error \begin{document}$ \mathcal{O}(\lambda^{-4}) $\end{document} recovers above two quantities with no additional information about \begin{document}$ {\mathbf{A}} $\end{document} and \begin{document}$ V $\end{document} . We also establish stability estimates for \begin{document}$ {\rm{curl}}\ {\mathbf{A}} $\end{document} and \begin{document}$ V-\frac{1}{2}\nabla\cdot{\mathbf{A}} $\end{document} .
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来源期刊
Inverse Problems and Imaging
Inverse Problems and Imaging 数学-物理:数学物理
CiteScore
2.50
自引率
0.00%
发文量
55
审稿时长
>12 weeks
期刊介绍: Inverse Problems and Imaging publishes research articles of the highest quality that employ innovative mathematical and modeling techniques to study inverse and imaging problems arising in engineering and other sciences. Every published paper has a strong mathematical orientation employing methods from such areas as control theory, discrete mathematics, differential geometry, harmonic analysis, functional analysis, integral geometry, mathematical physics, numerical analysis, optimization, partial differential equations, and stochastic and statistical methods. The field of applications includes medical and other imaging, nondestructive testing, geophysical prospection and remote sensing as well as image analysis and image processing. This journal is committed to recording important new results in its field and will maintain the highest standards of innovation and quality. To be published in this journal, a paper must be correct, novel, nontrivial and of interest to a substantial number of researchers and readers.
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