Momentum distribution and correlation function of quasicondensates in elongated traps

F. Gerbier; J. H. Thywissen; S. Richard; M. Hugbart; P. Bouyer; A. Aspect

doi:10.1103/PhysRevA.67.051602

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Momentum distribution and correlation function of quasicondensates in elongated traps

F. Gerbier, J. H. Thywissen, S. Richard, M. Hugbart, P. Bouyer, and A. Aspect

Phys. Rev. A 67, 051602(R) – Published 27 May 2003

Abstract

We calculate the spatial correlation function and momentum distribution of a phase-fluctuating, elongated three-dimensional condensate in a trap and in free expansion. We take the inhomogeneous density profile into account via a local-density approximation. We find an almost Lorentzian momentum distribution, in stark contrast with a Heisenberg-limited Thomas-Fermi condensate.

Received 5 November 2002

DOI:https://doi.org/10.1103/PhysRevA.67.051602

Authors & Affiliations

F. Gerbier^*, J. H. Thywissen^†, S. Richard, M. Hugbart, P. Bouyer, and A. Aspect^‡

Laboratoire Charles Fabry de l’Institut d’Optique, 91403 Orsay, France

^*Email address: fabrice.gerbier@iota.u-psud.fr
^†Present address: Department of Physics, University of Toronto, Canada.
^‡UMRA 8501 du CNRS.

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Vol. 67, Iss. 5 — May 2003

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