Half-line eigenfunction estimates and singular continuous spectrum of zero Lebesgue measure
Abstract
We consider discrete one-dimensional Schr\"odinger operators with strictly ergodic, aperiodic potentials taking finitely many values. The well-known tendency of these operators to have purely singular continuous spectrum of zero Lebesgue measure is further elucidated. We provide a unified approach to both the study of the spectral type as well as the measure of the spectrum as a set. We apply this approach to Schr\"odinger operators with Sturmian potentials. Finally, in the appendix, we discuss the two different strictly ergodic dynamical systems associated to a circle map.
Cite
@article{arxiv.math/9905099,
title = {Half-line eigenfunction estimates and singular continuous spectrum of zero Lebesgue measure},
author = {David Damanik and Daniel Lenz},
journal= {arXiv preprint arXiv:math/9905099},
year = {2007}
}
Comments
15 pages; extended and corrected version of the paper "Half-line eigenfunction estimates and stability of singular continuous spectrum"; contains thorough discussion of pure point spectrum arising in the models in question under rank one perturbations