On the spectrum of critical almost Mathieu operators in the rational case

JOURNAL OF SPECTRAL THEORY

We derive a new Chambers-type formula and prove sharper upper bounds on the measure of the spectrum of critical almost Mathieu operators with rational frequencies.

10.4171/JST/392

WOS:000779284300002

https://hdl.handle.net/20.500.11767/135859

info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85128168146

https://arxiv.org/abs/2007.01005

https://ricerca.unityfvg.it/handle/20.500.11767/135859

open access