Observations of density fluctuations in an elongated Bose gas: ideal gas and quasi-condensate regimes

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dc.creatorEsteve, Jerome
dc.creatorTrebbia, Jean-Baptiste
dc.creatorSchumm, Thorsten
dc.creatorAspect, Alain
dc.creatorWestbrook, Christoph I.
dc.creatorBouchoule, Isabelle
dc.date2005-10-14
dc.date2006-04-07
dc.date.accessioned2026-07-07T06:44:24Z
dc.date.available2026-07-07T06:44:24Z
dc.descriptionWe report in situ measurements of density fluctuations in a quasi one dimensional Bose gas at thermal equilibrium in an elongated harmonic trap. We observe an excess of fluctuations compared to the shot noise level expected for uncorrelated atoms. At low atomic density, the measured excess is in good agreement with the expected bunching for an ideal Bose gas. At high density, the measured fluctuations are strongly reduced compared to the ideal gas case. We attribute this reduction to repulsive interatomic interactions. The data are compared with a calculation for an interacting Bose gas in the quasi-condensate regime.
dc.identifierhttps://arxiv.org/abs/cond-mat/0510397
dc.identifierhttp://arxiv.org/abs/cond-mat/0510397
dc.identifierPhysical Review Letters 96 (2006) 130403
dc.identifierdoi:10.1103/PhysRevLett.96.130403
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/102766
dc.subjectOther Condensed Matter
dc.subjectQuantum Physics
dc.titleObservations of density fluctuations in an elongated Bose gas: ideal gas and quasi-condensate regimes
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