Ballistic transport for one-dimensional quasiperiodic Schrödinger operators

Abstract

In this paper, we show that one-dimensional discrete multi-frequency quasiperiodic Schrödinger operators with smooth potentials demonstrate ballistic motion on the set of energies on which the corresponding Schrödinger cocycles are smoothly reducible to constant rotations. The proof is performed by establishing a local version of strong ballistic transport on an exhausting sequence of subsets on which reducibility can be achieved by a conjugation uniformly bounded in the ${\mathrm{C}}^{\ell }$-norm. We also establish global strong ballistic transport under an additional integral condition on the norms of conjugation matrices. The latter condition is quite mild and is satisfied in many known examples.

References in corpus (4)

• The absolutely continuous spectrum of the almost Mathieu operator
• Almost reducibility and absolute continuity I
• Quantum Dynamics of Periodic and Limit-Periodic Jacobi and Block Jacobi Matrices with Applications to Some Quantum Many Body Problems
• On the relation between strong ballistic transport and exponential dynamical localization

Cited by in corpus (2)

• Arithmetic version of anderson localization for quasiperiodic Schrödinger operators with even cosine type potentials
• Ballistic Transport for Periodic Jacobi Operators on ${\mathbb{Z}}^d$