English

Detecting intrinsic global geometry of an obstacle via the layered scattering

Dynamical Systems 2022-02-01 v3

Abstract

Given a compact kk-dimensional submanifold KRnK \subset \mathbf R^n, incapsulated in a compact domain MRnM \subset \mathbf R^n, we consider the problem of determining the inner geometry of the obstacle KK from the scattering data, produced by the reflections of geodesic trajectories from the boundary of a tubular ϵ\epsilon-neighborhood T(K,ϵ)\mathsf T(K, \epsilon) of KK in MM. The geodesics emanate from M\partial M and terminate there, after a number of reflections from the boundary T(K,ϵ)\partial \mathsf T(K, \epsilon). We use dim(K)/2\lceil \dim(K)/2\rceil many tubes {T(K,ϵj)}j\{\mathsf T(K, \epsilon_j)\}_j for detecting certain global intrinsic geometry invariants of KK, thus the words "layered scattering" in the title. These invariants were studied by Hermann Weyl in his theory of tubes.

Keywords

Cite

@article{arxiv.2108.05478,
  title  = {Detecting intrinsic global geometry of an obstacle via the layered scattering},
  author = {Gabriel Katz},
  journal= {arXiv preprint arXiv:2108.05478},
  year   = {2022}
}

Comments

a mistake in the proof of Lemma 3.1