Self-induced density modulations in the free expansion of Bose-Einstein condensates

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dc.creatorSalasnich, L.
dc.creatorManini, N.
dc.creatorBonelli, F.
dc.creatorKorbman, M.
dc.creatorParola, A.
dc.date2007-01-17
dc.date.accessioned2026-07-07T08:10:17Z
dc.date.available2026-07-07T08:10:17Z
dc.descriptionWe simulate numerically the free expansion of a repulsive Bose-Einstein condensate with an initially Gaussian density profile. We find a self-similar expansion only for weak inter-atomic repulsion. In contrast, for strong repulsion we observe the spontaneous formation of a shock wave at the surface followed by a significant depletion inside the cloud. In the expansion, contrary to the case of a classical viscous gas, the quantum fluid can generate radial rarefaction density waves with several minima and maxima. These intriguing nonlinear effects, never observed yet in free-expansion experiments with ultra-cold alkali-metal atoms, can be detected with the available setups.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0701411
dc.identifierhttp://arxiv.org/abs/cond-mat/0701411
dc.identifierPhys. Rev. A 75, 043616 (2007)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/131781
dc.subjectOther Condensed Matter
dc.subjectStatistical Mechanics
dc.subjectPattern Formation and Solitons
dc.titleSelf-induced density modulations in the free expansion of Bose-Einstein condensates
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