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arxiv: math/0409061 · v1 · pith:S5ZXDSUBnew · submitted 2004-09-06 · 🧮 math.DS · math-ph· math.MP

Generic singular continuous spectrum for ergodic Schr\"odinger operators

classification 🧮 math.DS math-phmath.MP
keywords omegacontinuousergodicgenericodingeroperatorsschrspectrum
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We consider Schr\"odinger operators with ergodic potential $V_\omega(n)=f(T^n(\omega))$, $n \in \Z$, $\omega \in \Omega$, where $T:\Omega \to \Omega$ is a non-periodic homeomorphism. We show that for generic $f \in C(\Omega)$, the spectrum has no absolutely continuous component. The proof is based on approximation by discontinuous potentials which can be treated via Kotani Theory.

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