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On the scattering length spectrum for real analytic obstacles

机译:关于实际分析障碍物的散射长度谱

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It follows trivially from old results of Majda and Lax-Phillips that connected obstacles K with real analytic boundary in R-n are uniquely determined by their scattering length spectrum. In this paper we prove a similar result in the general case (i.e. R may be disconnected) imposing some non-degeneracy conditions on K and assuming that its trapping set does not topologically divide S*(C), where C is a sphere containing K. It is shown that the conditions imposed on K are fulfilled, for instance, when K is a finite disjoint union of strictly convex bodies. (C) 2000 Academic Press. [References: 19]
机译:从Majda和Lax-Phillips的旧结果中得出的琐碎结论是,将障碍物K与R-n中的实际解析边界联系起来是由它们的散射长度谱唯一确定的。在本文中,我们证明了在一般情况下(即R可能被断开)在K上施加一些非简并条件并假设其陷印集不对S *(C)进行拓扑划分的类似结果,其中C是包含K的球体结果表明,施加在K上的条件可以满足,例如,当K是严格凸体的有限不交集并集时。 (C)2000学术出版社。 [参考:19]

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