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Momentum Distribution Of A Bose Condensed Trapped Gas

Stringari, S. and Pitaevskii, L. and Stamper-Kurn, D. M. and Zambelli, F. (2002) Momentum Distribution Of A Bose Condensed Trapped Gas. In: Bose-Einstein Condensates and Atom Lasers. Kluwer Academic Publishers , Boston, pp. 77-95. ISBN 978-0-306-46471-3.

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A peculiarity of trapped atomic gases is that Bose-Einstein condensation (BEC) shows up not only in momentum space, where it is usually discussed in traditional textbooks, but also in coordinate space. This is the consequence of the inhomogeneity of these systems, which makes it possible to separate the condensate from the thermal component also in coordinate space. Actually, most of measurements in trapped gases have been so far limited to the study of density profiles and of the effects of BEC in coordinate space. The possibility of a direct measurement of the momentum distribution, as emerged from recent experiments based on two-photon Bragg scattering, is highly appealing. In fact, despite the inhomogeneity of the gas, BEC shows up more deeply in momentum than in coordinate space. In current experiments on harmonically-confined Bose gases, the sizes of the condensate R and of the thermal cloud R_T are in fact typically comparable.

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Additional Information:© 2002 Kluwer Academic Publishers. We are very grateful to W. Ketterle and A.P. Chikkatur for many fruitful discussions. D.M. Stamper-Kurn acknowledges support of Millikan Prize Postdoctoral Fellowship. This work has been supported by the Istituto Nazionale per la Fisica della Materia (INFM) through the Advanced Research Project on BEC, and by Ministero dell ’Università e della Ricerca Scientifica e Tecnologica (MURST).
Funding AgencyGrant Number
Robert A. Millikan FellowshipUNSPECIFIED
Istituto Nazionale per la Fisica della Materia (INFM)UNSPECIFIED
Ministero dell ’Università e della Ricerca Scientifica e Tecnologica (MURST)UNSPECIFIED
Subject Keywords:Momentum Space; Momentum Distribution; Impulse Approximation; Dynamic Structure Factor; Thermal Cloud
Record Number:CaltechAUTHORS:20200108-085131274
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:100555
Deposited By: Tony Diaz
Deposited On:08 Jan 2020 20:01
Last Modified:16 Nov 2021 17:54

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