Three-body correlation functions and recombination rates for bosons in three dimensions and one dimension

We investigate local three-body correlations for bosonic particles in three dimensions and one dimension as a function of the interaction strength. The three-body correlation function g(3) is determined by measuring the three-body recombination rate in an ultracold gas of Cs atoms. In three dimensio...

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Bibliographic Details
Published in:Physical review letters 2011-12, Vol.107 (23), p.230404-230404, Article 230404
Main Authors: Haller, E, Rabie, M, Mark, M J, Danzl, J G, Hart, R, Lauber, K, Pupillo, G, Nägerl, H-C
Format: Article
Language:English
Subjects:
ALKALI METALS
BOSE-EINSTEIN CONDENSATION
BOSONS
CESIUM
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CORRELATION FUNCTIONS
ELEMENTS
FUNCTIONS
INTERACTIONS
MANY-BODY PROBLEM
MEAN-FIELD THEORY
METALS
ONE-DIMENSIONAL CALCULATIONS
RECOMBINATION
THREE-BODY PROBLEM
THREE-DIMENSIONAL CALCULATIONS
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Summary:We investigate local three-body correlations for bosonic particles in three dimensions and one dimension as a function of the interaction strength. The three-body correlation function g(3) is determined by measuring the three-body recombination rate in an ultracold gas of Cs atoms. In three dimensions, we measure the dependence of g(3) on the gas parameter in a BEC, finding good agreement with the theoretical prediction accounting for beyond-mean-field effects. In one dimension, we observe a reduction of g(3) by several orders of magnitude upon increasing interactions from the weakly interacting BEC to the strongly interacting Tonks-Girardeau regime, in good agreement with predictions from the Lieb-Liniger model for all strengths of interaction.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.107.230404