Stability of trapped Bose-Einstein condensates

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorCentro Técnico Aeroespacial-
Autor(es): dc.contributorPhysical-Technical Institute-
Autor(es): dc.creatorAbdullaev, F. Kh-
Autor(es): dc.creatorGammal, A.-
Autor(es): dc.creatorTomio, Lauro-
Autor(es): dc.creatorFrederico, T.-
Data de aceite: dc.date.accessioned2025-08-21T22:47:54Z-
Data de disponibilização: dc.date.available2025-08-21T22:47:54Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2001-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1103/PhysRevA.63.043604-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/224562-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/224562-
Descrição: dc.descriptionIn three-dimensional trapped Bose-Einstein condensate (BEC), described by the time-dependent Gross-Pitaevskii-Ginzburg equation, we study the effect of initial conditions on stability using a Gaussian variational approach and exact numerical simulations. We also discuss the validity of the criterion for stability suggested by Vakhitov and Kolokolov. The maximum initial chirp (initial focusing defocusing of cloud) that can lead a stable condensate to collapse even before the number of atoms reaches its critical limit is obtained for several specific cases. When we consider two- and three-body nonlinear terms, with negative cubic and positive quintic terms, we have the conditions for the existence of two phases in the condensate. In this case, the magnitude of the oscillations between the two phases are studied considering sufficient large initial chirps. The occurrence of collapse in a BEC with repulsive two-body interaction is also shown to be possible. ©2001 The American Physical Society.-
Descrição: dc.descriptionInst. de Fis. Teórica Universidade Estadual Paulista, 01405-900 São Paulo-
Descrição: dc.descriptionDepartamento de Física Inst. Tecn. da Aeronáutica Centro Técnico Aeroespacial, 12228-900 S. Jose dos Campos, SP-
Descrição: dc.descriptionPhysical-Technical Institute, Tashkent-
Descrição: dc.descriptionInst. de Fis. Teórica Universidade Estadual Paulista, 01405-900 São Paulo-
Formato: dc.format1-14-
Idioma: dc.languageen-
Relação: dc.relationPhysical Review A - Atomic, Molecular, and Optical Physics-
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Título: dc.titleStability of trapped Bose-Einstein condensates-
Tipo de arquivo: dc.typelivro digital-
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