Generic Continuous Spectrum for Ergodic Schr"odinger Operators

Details Generic Continuous Spectrum for Ergodic Schr"odinger Operators Generic Continuous Spectrum for Ergodic Schr"odinger Operators

2007-08-09

arxiv.org/abs/0708.1263v1

Mathematics

Spectral Theory

14 pages

Scientific paper

We consider discrete Schr"odinger operators on the line with potentials generated by a minimal homeomorphism on a compact metric space and a continuous sampling function. We introduce the concepts of topological and metric repetition property. Assuming that the underlying dynamical system satisfies one of these repetition properties, we show using Gordon's Lemma that for a generic continuous sampling function, the associated Schr"odinger operators have no eigenvalues in a topological or metric sense, respectively. We present a number of applications, particularly to shifts and skew-shifts on the torus.

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