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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleDynamics of a Bose-Einstein condensate in a symmetric triple-well trappt_BR
dc.contributor.authorViscondi, TFpt_BR
dc.contributor.authorFuruya, Kpt_BR
unicamp.authorViscondi, Thiago F. Furuya, K. Univ Estadual Campinas UNICAMP, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP, Brazilpt_BR
dc.subject.wosCoherent Statespt_BR
dc.description.abstractWe present a complete analysis of the dynamics of a Bose-Einstein condensate trapped in a symmetric triple-well potential. Our classical analogue treatment, based on a time-dependent variational method using SU(3) coherent states, includes the parameter dependence analysis of the equilibrium points and their local stability, which is closely related to the condensate collective behaviour. We also consider the effects of off-site interactions, and how these 'cross-collisions' may become relevant for a large number of trapped bosons. Even in the presence of cross-collisional terms, the model still features an integrable sub-regime, known as the twin-condensate dynamics, which corresponds to invariant surfaces in the classical phase space. However, the quantum dynamics preserves the twin-condensate defining characteristics only partially, thus breaking the invariance of the associated quantum subspace. Moreover, the periodic geometry of the trapping potential allowed us to investigate the dynamics of finite angular momentum collective excitations, which can be suppressed by the emergence of chaos. Finally, using the generalized purity associated with the su(3) algebra, we were able to quantify the dynamical classicality of a quantum evolved system, as compared to the corresponding classical
dc.relation.ispartofJournal Of Physics A-mathematical And Theoreticalpt_BR
dc.relation.ispartofabbreviationJ. Phys. A-Math. Theor.pt_BR
dc.publisherIop Publishing Ltdpt_BR 29pt_BR
dc.identifier.citationJournal Of Physics A-mathematical And Theoretical. Iop Publishing Ltd, v. 44, n. 17, 2011.pt_BR
dc.sourceWeb of Sciencept_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipBrazilian National Institute of Science and Technology of Quantum Information (INCT-IQ)pt_BR
dc.description.sponsorship1Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsordocumentnumberFAPESP [2008/09491-9]pt
dc.description.sponsordocumentnumberCNPq [304041/2007-6]pt
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dc.description.provenanceMade available in DSpace on 2015-11-26T16:29:52Z (GMT). No. of bitstreams: 2 WOS000289145700010.pdf: 1707625 bytes, checksum: fb78acffbd6b175da02b2477a40ecc5a (MD5) WOS000289145700010.pdf.txt: 58081 bytes, checksum: 7ce2c659dc62898e6855d3fa80ec194b (MD5) Previous issue date: 2011en
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