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arXiv 2104.05058math.AP
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奇点几乎总是散射:非散射不均匀性的正则性结果

Singularities Almost Always Scatter: Regularity Results for Non-scattering Inhomogeneities

Fioralba Cakoni, Michael S. Vogelius

摘要:

在本文中,我们研究的必要条件是非散射的不均匀性,或等价地,通过否定,充分条件,它是散射。这些条件是根据不均匀性边界的规则性来制定的。我们研究了两个和三个维度的入射波的广泛类别。我们的分析深受Williams [28]的分析的影响,Williams [28]的分析是为了证明一个不具有庞培性质的区域具有一个真正的解析边界。该分析以及我们的分析都依赖于Kinderlehrer和Nirenberg [18]以及Caffarelli [6]的经典自由边界正则性结果。

英文摘要:

In this paper we examine necessary conditions for an inhomogeneity to be non-scattering, or equivalently, by negation, sufficient conditions for it to be scattering. These conditions are formulated in terms of the regularity of the boundary of the inhomogeneity. We examine broad classes of incident waves in both two and three dimensions. Our analysis is greatly influenced by the analysis carried out by Williams [28] in order to establish that a domain, which does not possess the Pompeiu Property, has a real analytic boundary. That analysis, as well as ours, relies crucially on classical free boundary regularity results due to Kinderlehrer and Nirenberg [18], and Caffarelli [6].

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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