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Collective Modes of Trapped Interacting Bosons

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Gnanapragasam, Gnanasangeetha; Das, Mukunda P

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The derivation for collective modes of an interacting Bose gas trapped by an isotropic harmonic oscillator potential is presented using field-theoretic method. The presence of the two-body scattering term beyond the mean-field is seen to appear inevitably in the calculations, even in the simplest approximation. As a result we see the occurrence of a small number of non-condensate atoms in the ground state density fluctuations.

dc.contributor.authorGnanapragasam, Gnanasangeetha
dc.contributor.authorDas, Mukunda P
dc.date.accessioned2015-12-07T22:21:43Z
dc.identifier.issn0217-9792
dc.identifier.urihttp://hdl.handle.net/1885/20166
dc.description.abstractThe derivation for collective modes of an interacting Bose gas trapped by an isotropic harmonic oscillator potential is presented using field-theoretic method. The presence of the two-body scattering term beyond the mean-field is seen to appear inevitably in the calculations, even in the simplest approximation. As a result we see the occurrence of a small number of non-condensate atoms in the ground state density fluctuations.
dc.publisherWorld Scientific Publishing Company
dc.sourceInternational Journal of Modern Physics B
dc.subjectKeywords: Collective modes; Harmonically confined; Interacting Bose gas
dc.titleCollective Modes of Trapped Interacting Bosons
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume22
dc.date.issued2008
local.identifier.absfor020201 - Atomic and Molecular Physics
local.identifier.ariespublicationu4348025xPUB11
local.type.statusPublished Version
local.contributor.affiliationGnanapragasam, Gnanasangeetha, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationDas, Mukunda P, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue25
local.bibliographicCitation.startpage4349
local.bibliographicCitation.lastpage4357
local.identifier.doi10.1142/S0217979208050103
dc.date.updated2016-02-24T11:05:03Z
local.identifier.scopusID2-s2.0-55949104115
local.identifier.thomsonID000260804900008
CollectionsANU Research Publications

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