Construction of Isozaki–Kitada modifiers for discrete Schrödinger operators on general lattices
Annales Henri Lebesgue, Volume 8 (2025), pp. 255-276.

Metadata

Keywords long-range scattering theory, discrete Schrödinger operators, modified wave operators, time-independent modifiers

Abstract

We consider a scattering theory for difference operators on $\mathcal{H}=\ell ^2(\mathbb{Z}^d; \mathbb{C}^n)$ perturbed with a long-range potential $V:\mathbb{Z}^d\rightarrow \mathbb{R}^n$. One of the motivating examples is discrete Schrödinger operators on $\mathbb{Z}^d$-periodic graphs. We construct time-independent modifiers, so-called Isozaki–Kitada modifiers, and we prove that the modified wave operators with the above-mentioned Isozaki–Kitada modifiers exist and that they are complete.


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