Abstract
We investigate the correlation properties of a one-dimensional interacting Bose gas by loading a magnetically trapped 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.
- Received 7 November 2003
DOI:https://doi.org/10.1103/PhysRevLett.92.190401