Presence and Absence of Delocalization-localization Transition in Coherently Perturbed Disordered Lattices
arXiv:2011.07475 · doi:10.1103/PhysRevE.103.L040202
Abstract
A new type of delocalization induced by coherent harmonic perturbations in one-dimensional Anderson-localized disordered systems is investigated. With only a few frequencies a normal diffusion is realized, but the transition to localized state always occurs as the perturbation strength is weakened below a critical value. The nature of the transition qualitatively follows the Anderson transition (AT) if the number of degrees of freedom is regarded as the spatial dimension , but the critical dimension is not of the ordinary AT but .
arXiv comment5 pages, 4 figures
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