On the Regularity of Non-scattering Anisotropic Inhomogeneities

On the Regularity of Non-scattering Anisotropic Inhomogeneities
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论非散射各向异性不均匀性的规律性

DOI:
10.1007/s00205-023-01863-y
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发表时间:
2023
影响因子:
2.5
通讯作者:
Xiao, Jingni
Xiao, Jingni
中科院分区:
数学1区
文献类型:
--
作者:
Cakoni, Fioralba;Vogelius, Michael S.;Xiao, Jingni

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本文研究了各向异性非均匀介质在单波数和单入射场下不散射的必要条件。这些条件用不均匀边界的正则性来表示。我们假设表征介质的本构材料性质的系数是足够光滑的,并且入射波是适当的非简并的。我们的分析利用了Hodoggraph变换以及非线性椭圆型偏微分方程的正则性结果。我们的方法要求先验的边界对于某些人来说是类的。
In this paper we examine the necessary conditions for an anisotropic inhomogeneous medium to be non-scattering at a single wave number and for a single incident field. These conditions are expressed in terms of the regularity of the boundary of the inhomogeneity. We assume that the coefficients, characterizing the constitutive material properties of the medium, are sufficiently smooth, and that the incident wave is appropriately non-degenerate. Our analysis utilizes the Hodograph transform as well as regularity results for nonlinear elliptic partial differential equations. Our approach requires that the boundary a-priori is of classfor some.
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