Artikel,

Observation of Reduced Three-Body Recombination in a Correlated 1D Degenerate Bose Gas

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Physical Review Letters, 92 (19): 190401+ (10.05.2004)
DOI: 10.1103/physrevlett.92.190401

Zusammenfassung

We investigate the correlation properties of a one-dimensional interacting Bose gas by loading a magnetically trapped 87 Rb 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.

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