title: Observation of reduced three-body recombination in a correlated 1D degenerate Bose gas.
abstract: We investigate the correlation properties of a one-dimensional interacting Bose gas by loading a magnetically trapped 87Rb Bose-Einstein condensate (BEC) into a deep two-dimensional optical lattice. We measure the three-body recombination rate for both the BEC in the magnetic trap and the BEC loaded into the optical lattice. The recombination rate coefficient is a factor of 7 smaller in the lattice, which we interpret as a reduction in the local three-body correlation function in the 1D case. This is a signature of correlation intermediate between that of the uncorrelated, phase coherent, 1D, mean-field regime and the strongly correlated Tonks-Girardeau regime.
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.
authors.forename: B
authors.initials: B
authors.lastname: Laburthe Tolra
authors.forename: K M
authors.initials: KM
authors.lastname: O'Hara
authors.forename: J H
authors.initials: JH
authors.lastname: Huckans
authors.forename: W D
authors.initials: WD
authors.lastname: Phillips
authors.forename: S L
authors.initials: SL
authors.lastname: Rolston
authors.forename: J V
authors.initials: JV
authors.lastname: Porto