Localization in the quantum description of the periodically perturbed rotor

Abstract

In this paper we present some recent results concerning localization phenomena in the quantum dynamics of the periodically perturbed rotor. We discuss the response of a planar rotor and of a diatomic molecule to a periodic train of smooth and finite field pulses and show that both cases correspond to an Anderson model on. a finite grid. The second topic is the study of the localization properties for the b-kicked rotor when the kicking strength is large, using the transfer matrix technique.