arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1306.0763math.APmath-phmath.MP
收藏

二维反问题的Holder-对数稳定性估计

A Holder-logarithmic stability estimate for an inverse problem in two dimensions

Matteo Santacesaria

摘要:

考虑了正能量下二维薛定谔方程中实值势从Dirichlet-to-Neumann映射的恢复问题。我们知道这个问题是严重不适定的,并且势的重建一般只是对数稳定的。本文证明了一个新的稳定性估计,它显式地依赖于势的正则性和能量。它的主要特征是在足够高的能量下有一个有效的增稳现象:在某种意义上,稳定性迅速从对数型转变为Holder型。本文还开发了几个估计的非局部黎曼-希尔伯特问题,这可能是独立的利益。

英文摘要:

The problem of the recovery of a real-valued potential in the two-dimensional Schrodinger equation at positive energy from the Dirichlet-to-Neumann map is considered. It is know that this problem is severely ill-posed and the reconstruction of the potential is only logarithmic stable in general. In this paper a new stability estimate is proved, which is explicitly dependent on the regularity of the potentials and on the energy. Its main feature is an efficient increasing stability phenomenon at sufficiently high energies: in some sense, the stability rapidly changes from logarithmic type to Holder type. The paper develops also several estimates for a non-local Riemann-Hilbert problem which could be of independent interest.

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。

↑