Three-Body Correlation Functions and Recombination Rates for Bosons in Three Dimensions and One Dimension

Journal Article · Fri Dec 02 00:00:00 EST 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.107.230404· OSTI ID:21612330

Haller, E ^[1]; Rabie, M; Mark, M J; Danzl, J G; Hart, R; Lauber, K; Naegerl, H -C ^[1]; Pupillo, G ^[2]

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1. Institut fuer Experimentalphysik und Zentrum fuer Quantenphysik, Universitaet Innsbruck, 6020 Innsbruck (Austria)
2. Institut fuer Quantenoptik und Quanteninformation, Oesterreichische Akademie der Wissenschaften, 6020 Innsbruck (Austria)

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{sup (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{sup (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{sup (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.

• OSTI ID: 21612330
• Journal Information: Physical Review Letters, Vol. 107, Issue 23; Other Information: DOI: 10.1103/PhysRevLett.107.230404; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
BOSONS
CESIUM
CORRELATION FUNCTIONS
INTERACTIONS
MEAN-FIELD THEORY
ONE-DIMENSIONAL CALCULATIONS
RECOMBINATION
THREE-BODY PROBLEM
THREE-DIMENSIONAL CALCULATIONS
ALKALI METALS
ELEMENTS
FUNCTIONS
MANY-BODY PROBLEM
METALS