Momentum distribution and correlation function of quasicondensates in elongated traps

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 {\it{via}} a local density approximation. We find an almost Lorentzian momen...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2003-05, Vol.67 (5), Article 051602
Main Authors: Gerbier, F., Thywissen, J. H., Richard, S., Hugbart, M., Bouyer, P., Aspect, A.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
BOSE-EINSTEIN CONDENSATION
Condensed Matter
CORRELATION FUNCTIONS
DENSITY FUNCTIONAL METHOD
DISTRIBUTION
EXPANSION
Other
Physics
THOMAS-FERMI MODEL
THREE-DIMENSIONAL CALCULATIONS
TRAPS
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Summary: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 {\it{via}} a local density approximation. We find an almost Lorentzian momentum distribution, in stark contrast with a Heisenberg-limited Thomas-Fermi condensate.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.67.051602