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math.SP2024
On the singularities of the spectral shift function for some tight-binding models
Marouane Assal, Olivier Bourget, Diomba Sambou +1
We consider perturbed discrete tight-binding models in describing union of quantum particles with localized interactions, where is…
math-ph2024★ 1 cited
On absolutely continuous spectrum for one-channel unitary operators
Olivier Bourget, Gregorio Moreno, Christian Sadel +1
In this paper, we develop the radial transfer matrix formalism for unitary one-channel operators. This generalizes previous formalisms for CMV matrices and scattering zippers. We e…