title: Three-body correlation functions and recombination rates for bosons in three dimensions and one dimension.
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.
authors.affiliation: Institut für Experimentalphysik und Zentrum für Quantenphysik, Universität Innsbruck, 6020 Innsbruck, Austria.
authors.forename: E
authors.initials: E
authors.lastname: Haller
authors.forename: M
authors.initials: M
authors.lastname: Rabie
authors.forename: M J
authors.initials: MJ
authors.lastname: Mark
authors.forename: J G
authors.initials: JG
authors.lastname: Danzl
authors.forename: R
authors.initials: R
authors.lastname: Hart
authors.forename: K
authors.initials: K
authors.lastname: Lauber
authors.forename: G
authors.initials: G
authors.lastname: Pupillo
authors.forename: H-C
authors.initials: HC
authors.lastname: Nägerl