Bogoliubov speed of sound for a dilute Bose-Einstein condensate in a 3d optical lattice

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dc.creatorBoers, Dave
dc.creatorWeiss, Christoph
dc.creatorHolthaus, Martin
dc.date2004-07-23
dc.date.accessioned2026-07-07T02:59:22Z
dc.date.available2026-07-07T02:59:22Z
dc.descriptionWe point out that the velocity of propagation of sound wavepackets in a Bose-Einstein condensate filling a three-dimensional cubic optical lattice undergoes a maximum with increasing lattice depth. For a realistic choice of parameters, the maximum sound velocity in a lattice condensate can exceed the sound velocity in a homogeneous condensate with the same average density by 30%. The maximum falls into the superfluid regime, and should be observable under currently achievable laboratory conditions.
dc.description6 pages, 2 figures, accepted for publication in Europhys. Lett. http://www.epletters.ch/
dc.identifierhttps://arxiv.org/abs/cond-mat/0407617
dc.identifierhttp://arxiv.org/abs/cond-mat/0407617
dc.identifierEurophys. Lett. 67, 887 (2004)
dc.identifierdoi:10.1209/epl/i2004-10140-7
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24482
dc.subjectSoft Condensed Matter
dc.titleBogoliubov speed of sound for a dilute Bose-Einstein condensate in a 3d optical lattice
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