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Condensate localization in a quasi-periodic structure | | Y. Eksioglu
; P. Vignolo
; M.P. Tosi
; | | Date: |
19 May 2004 | | Subject: | Soft Condensed Matter; Disordered Systems and Neural Networks | cond-mat.soft cond-mat.dis-nn | | Affiliation: | SNS, Pisa | | Abstract: | We propose a set-up of optical laser beams by which one may realize a quasi-one-dimensional Fibonacci array of potential wells for a Bose-Einstein condensate. We use a Bose-Hubbard tight-binding model to evaluate the transport of superfluid Rb87 atoms driven by a constant force through such an array. We show that the minigaps that are generated in the spectral density-of-states by the quasi-periodic disorder give rise to prominent localization effects, which can be observed by measuring the tunnel output of matter into vacuum as a function of the intensity of the applied force. | | Source: | arXiv, cond-mat/0405440 | | Services: | Forum | Review | PDF | Favorites | |
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