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

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

2011-07-22

arxiv.org/abs/1107.4516v1

Phys. Rev. Lett. 107, 230404 (2011)

Physics

Condensed Matter

Quantum Gases

5 figures

Scientific paper

10.1103/PhysRevLett.107.230404

We investigate local three-body correlations for bosonic particles in three and one dimensions 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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