Free expansion of two-dimensional condensates with a vortex

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buir.contributor.authorTanatar, Bilal
buir.contributor.orcidTanatar, Bilal|0000-0002-5246-0119
dc.citation.epage2463en_US
dc.citation.issueNumber12en_US
dc.citation.spage2455en_US
dc.citation.volumeNumber36en_US
dc.contributor.authorHoşten, O.en_US
dc.contributor.authorVignolo, P.en_US
dc.contributor.authorMinguzzi, A.en_US
dc.contributor.authorTanatar, Bilalen_US
dc.contributor.authorTosi, M. P.en_US
dc.date.accessioned2016-02-08T10:29:48Z
dc.date.available2016-02-08T10:29:48Z
dc.date.issued2003en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe study the free expansion of a pancake-shaped Bose-condensed gas, which is initially trapped under harmonic confinement and containing a vortex at its centre. In the case of a radial expansion holding the axial confinement fixed we consider various models for the interactions, depending on the thickness of the condensate relative to the value of the scattering length. We are thus able to evaluate different scattering regimes ranging from quasi-three-dimensional (Q3D) to strictly two-dimensional (2D). We find that as the system goes from Q3D to 2D the expansion rate of the condensate increases whereas that of the vortex core decreases. In the Q3D scattering regime we also examine a fully free expansion in 3D and find oscillatory behaviour for the vortex core radius: an initial fast expansion of the vortex core is followed by a slowing down. Such a nonuniform expansion rate of the vortex core implies that the timing of its observation should be chosen appropriately.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:29:48Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2003en
dc.identifier.doi10.1088/0953-4075/36/12/306en_US
dc.identifier.issn0953-4075
dc.identifier.urihttp://hdl.handle.net/11693/24465
dc.language.isoEnglishen_US
dc.publisherInstitute of Physics Publishingen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/0953-4075/36/12/306en_US
dc.source.titleJournal of Physics B: Atomic, Molecular and Optical Physicsen_US
dc.subjectAnisotropyen_US
dc.subjectHarmonic analysisen_US
dc.subjectMathematical modelsen_US
dc.subjectPhase transitionsen_US
dc.subjectScatteringen_US
dc.subjectThermal effectsen_US
dc.subjectTwo-dimensional (2D) condensatesen_US
dc.subjectGas condensatesen_US
dc.titleFree expansion of two-dimensional condensates with a vortexen_US
dc.typeArticleen_US

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