Special Session 89: DYNAMICS AND SPECTRA OF QUASIPERIODIC SCHRODINGER OPERATORS

Reducibility without KAM
Fernando Argentieri
University of Zurich
Switzerland
Co-Author(s):    Fernando Argentieri and Bassam Fayad
Abstract:
We prove reducibility results for close to constant 1-frequency quasi-periodic matrix valued cocycles in finite and smooth regularity without the use of a quadratic scheme. Reducibility results to rotations matrices are obtained regardless of the arithmetics of the irrational base frequency.