Statistical properties of quasienergy spectrum for a system of coupled quantum states

摘要

Local spectral density (LSD) of quasienergies is investigated for a generic system of coupled quantum states represented by a superimposed band random matrix with preferential basis. The shape, the inverse participation ratio and the localization regimes for LSD are studied under conditions when the states are isolated or excited by a field, the shape of which is close to monochromatic one.