Three-body correlation functions and recombination rates for bosons in three dimensions and one dimension |
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Authors: | Haller E Rabie M Mark M J Danzl J G Hart R Lauber K Pupillo G Nägerl H-C |
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Institution: | Institut für Experimentalphysik und Zentrum für Quantenphysik, Universit?t Innsbruck, 6020 Innsbruck, Austria. |
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Abstract: | 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. |
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