A Floquet Operator with Pure Point Spectrum and Energy Instability

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/123046An example of Floquet operator with purely point spectrum and energy instability is presented. In the unperturbed energy eigenbasis its eigenfunctions are exponentially localized.24 pages. No figures. To appear in AHPMathematical PhysicsSpectral Theory81Q10 (11B,47B99)A Floquet Operator with Pure Point Spectrum and Energy Instabilitytext