Stable controllable giant vortex in a trapped Bose-Einstein condensate

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dc.contributor.authorAdhikari, S. K. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-06T16:45:43Z
dc.date.available2019-10-06T16:45:43Z
dc.date.issued2019-07-12
dc.description.abstractIn a harmonically-trapped rotating Bose-Einstein condensate (BEC), a vortex of large angular momentum decays to multiple vortices of unit angular momentum from an energetic consideration. We demonstrate the formation of a robust and dynamically stable giant vortex of large angular momentum in a harmonically trapped rotating BEC with a potential hill at the center, thus forming a Mexican hat like trapping potential. For a small inter-atomic interaction strength, a highly controllable stable giant vortex appears, whose angular momentum slowly increases as the angular frequency of rotation is increased. As the inter-atomic interaction strength is increased beyond a critical value, only vortices of unit angular momentum are formed, unless the strength of the potential hill at the center is also increased: for a stronger potential hill at the center a giant vortex is again formed. The dynamical stability of the giant vortex is demonstrated by real-time propagation numerically. These giant vortices of large angular momentum can be observed and studied experimentally in a highly controlled fashion.en
dc.description.affiliationInstituto de Fisica Teórica UNESP - Universidade Estadual Paulista
dc.description.affiliationUnespInstituto de Fisica Teórica UNESP - Universidade Estadual Paulista
dc.identifierhttp://dx.doi.org/10.1088/1612-202X/ab2d2c
dc.identifier.citationLaser Physics Letters, v. 16, n. 8, 2019.
dc.identifier.doi10.1088/1612-202X/ab2d2c
dc.identifier.issn1612-202X
dc.identifier.issn1612-2011
dc.identifier.scopus2-s2.0-85071665902
dc.identifier.urihttp://hdl.handle.net/11449/189595
dc.language.isoeng
dc.relation.ispartofLaser Physics Letters
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectgiant vortex
dc.subjectmean-field Gross-Pitaevskii equation
dc.subjectrotating Bose-Einstein condensate (BEC)
dc.titleStable controllable giant vortex in a trapped Bose-Einstein condensateen
dc.typeArtigo

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