Josephson oscillation and induced collapse in an attractive Bose-Einstein condensate

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dc.contributor.authorAdhikari, S. K.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:05:59Z
dc.date.available2014-05-20T14:05:59Z
dc.date.issued2005-07-01
dc.description.abstractUsing the axially symmetric time-dependent Gross-Pitaevskii equation we study the Josephson oscillation of an attractive Bose-Einstein condensate (BEC) in a one-dimensional periodic optical-lattice potential. We find that the Josephson frequency is virtually independent of the number of atoms in the BEC and of the interatomic interaction (attractive or repulsive). We study the dependence of the Josephson frequency on the laser wave length and the strength of the optical-lattice potential. For a fixed laser wave length (795 nm), the Josephson frequency decreases with increasing strength as found in the experiment of Cataliotti [Science 293, 843 (2001)]. For a fixed strength, the Josephson frequency remains essentially unchanged for a reasonable variation of laser wave length around 800 nm. However, the Josephson oscillation is disrupted with the increase of laser wave length beyond 2000 nm leading to a collapse of a sufficiently attractive BEC. These features of a Josephson oscillation can be tested experimentally with present setups.en
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, SP, Brazil
dc.format.extent7
dc.identifierhttp://dx.doi.org/10.1103/PhysRevA.72.013619
dc.identifier.citationPhysical Review A. College Pk: American Physical Soc, v. 72, n. 1, 7 p., 2005.
dc.identifier.doi10.1103/PhysRevA.72.013619
dc.identifier.fileWOS000230887300133.pdf
dc.identifier.issn1050-2947
dc.identifier.lattes8031087349809439
dc.identifier.urihttp://hdl.handle.net/11449/23157
dc.identifier.wosWOS:000230887300133
dc.language.isoeng
dc.publisherAmerican Physical Soc
dc.relation.ispartofPhysical Review A
dc.relation.ispartofsjr1,288
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleJosephson oscillation and induced collapse in an attractive Bose-Einstein condensateen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmerican Physical Soc
unesp.author.lattes8031087349809439
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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