One-Dimensional Anderson Localization in Certain Correlated Random Potentials
Résumé
We investigate Anderson localization of ultracold atoms in weak 1D correlated random potentials resulting from laser speckles. We show the existence of effective mobility edges corresponding to sharp crossovers between regions where localization lengths differ by orders of magnitude. Using perturbation theory, we derive analytical formulas up to two orders beyond Born approximation and find them in excellent agreement with exact numerical calculations. Finally, we analyze our findings in the light of a diagrammatic approach.
Domaines
Autre [cond-mat.other]
Origine : Fichiers produits par l'(les) auteur(s)