Characteristics of Bose-Einstein condensation in an optical lattice

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dc.creatorLin, G. -D.
dc.creatorZhang, Wei
dc.creatorDuan, L. -M.
dc.date2008-02-05
dc.date2008-05-21
dc.date.accessioned2026-07-07T09:39:47Z
dc.date.available2026-07-07T09:39:47Z
dc.descriptionWe discuss several possible experimental signatures of the Bose-Einstein condensation (BEC) transition for an ultracold Bose gas in an inhomogeneous optical lattice. Based on the commonly used time-of-flight imaging technique, we show that the momentum-space density profile in the first Brillouin zone, supplemented by the visibility of interference patterns, provides valuable information about the system. In particular, by crossing the BEC transition temperature, the appearance of a clear bimodal structure sets a qualitative and universal signature of this phase transition. Furthermore, the momentum distribution can also be applied to extract the condensate fraction, which may serve as a promising thermometer in such a system.
dc.description12 pages, 13 figures; Revised version with new figures; Phys. Rev. A 77, 043626 (2008)
dc.identifierhttps://arxiv.org/abs/0802.0700
dc.identifierhttp://arxiv.org/abs/0802.0700
dc.identifierPhys. Rev. A 77, 043626 (2008)
dc.identifierdoi:10.1103/PhysRevA.77.043626
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/161305
dc.subjectSuperconductivity
dc.subjectStatistical Mechanics
dc.titleCharacteristics of Bose-Einstein condensation in an optical lattice
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