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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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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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container_title	Physical review. A, Atomic, molecular, and optical physics
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creator	Gerbier, F. Thywissen, J. H. Richard, S. Hugbart, M. Bouyer, P. Aspect, A.
description	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.
doi_str_mv	10.1103/PhysRevA.67.051602
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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
title	Momentum distribution and correlation function of quasicondensates in elongated traps
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