Localization transition in weakly-interacting Bose superfluids in one-dimensional quasiperdiodic lattices
Résumé
We study the localization of collective pair excitations in weakly-interacting Bose superfluids in one-dimensional quasiperiodic lattices. The localization diagram is first determined numerically. For intermediate interaction and quasiperiodic amplitude we find a sharp localization transition, with extended low-energy states and localized high-energy states. We then develop an analytical treatment, which allows us to quantitatively map the localization transition into that of an effective multi-harmonic quasiperiodic system.
Domaines
Gaz Quantiques [cond-mat.quant-gas]Origine | Fichiers produits par l'(les) auteur(s) |
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