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Scattering theory for difference equations with operator coefficients

Spectral Theory 2025-01-22 v1

Abstract

We consider a second order difference equation with operator-valued coefficients. More precisely, we study either compact or trace class perturbations of the discrete Laplacian in the Hilbert space of bi-infinite square-summable sequence with entries in a fixed Hilbert space. We discuss its continuous and discrete spectrum, as well as properties of the associated scattering matrix.

Keywords

Cite

@article{arxiv.2501.11194,
  title  = {Scattering theory for difference equations with operator coefficients},
  author = {David Sher and Luis Silva and Boris Vertman and Monika Winklmeier},
  journal= {arXiv preprint arXiv:2501.11194},
  year   = {2025}
}

Comments

47 pages

R2 v1 2026-06-28T21:10:52.846Z