Inverse problems for Jacobi operators III: Mass-spring perturbations of semi-infinite systems

Details Inverse problems for Jacobi operators III: Mass-spring perturbations of semi-infinite systems Inverse problems for Jacobi operators III: Mass-spring perturbations of semi-infinite systems

2011-11-16

arxiv.org/abs/1111.3921v1

Physics

Mathematical Physics

27 pages, 3 figures

Scientific paper

Consider an infinite linear mass-spring system and a modification of it obtained by changing the first mass and spring of the system. We give results on the interplay of the spectra of such systems and on the reconstruction of the system from its spectrum and the one of the modified system. Furthermore, we provide necessary and sufficient conditions for two sequences to be the spectra of the mass-spring system and the perturbed one.

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