Matter-wave localization in a random potential

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorCheng, Yongshan
dc.creatorAdhikari, Sadhan Kumar
dc.date2013-09-30T18:58:51Z
dc.date2014-05-20T14:12:06Z
dc.date2013-09-30T18:58:51Z
dc.date2014-05-20T14:12:06Z
dc.date2010-07-26
dc.date.accessioned2017-04-05T22:01:00Z
dc.date.available2017-04-05T22:01:00Z
dc.identifierPhysical Review A. College Pk: Amer Physical Soc, v. 82, n. 1, p. 7, 2010.
dc.identifier1050-2947
dc.identifierhttp://hdl.handle.net/11449/24530
dc.identifier10.1103/PhysRevA.82.013631
dc.identifierWOS:000280292700014
dc.identifierWOS000280292700014.pdf
dc.identifierhttp://dx.doi.org/10.1103/PhysRevA.82.013631
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/869504
dc.descriptionBy numerical and variational solutions of the Gross-Pitaevskii equation, we studied the localization of a noninteracting and weakly interacting Bose-Einstein condensate (BEC) in a disordered cold atom lattice and a speckle potential. In the case of a single BEC fragment, the variational analysis produced good results. For a weakly disordered potential, the localized BEC's are found to have an exponential tail as in the weak Anderson localization. We also investigated the expansion of a noninteracting BEC in these potentials. We find that the BEC will be locked in an appropriate localized state after an initial expansion and will execute breathing oscillation around a mean shape when a BEC at equilibrium in a harmonic trap is suddenly released into a disorder potential.
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageeng
dc.publisherAmer Physical Soc
dc.relationPhysical Review A
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleMatter-wave localization in a random potential
dc.typeOtro


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