Atom loss from Bose-Einstein condensates due to Feshbach resonance

Details Atom loss from Bose-Einstein condensates due to Feshbach resonance Atom loss from Bose-Einstein condensates due to Feshbach resonance

1999-03-29

arxiv.org/abs/cond-mat/9903414v1

Phys. Rev. A, 60 (1999) R765

Physics

Condensed Matter

LaTeX, 4 pages, 4 PostScript figures, uses REVTeX and psfig, submitted to Physical Review A, Rapid Communications

Scientific paper

10.1103/PhysRevA.60.R765

In recent experiments on Na Bose-Einstein condensates [S. Inouye et al, Nature 392, 151 (1998); J. Stenger et al, Phys. Rev. Lett. 82, 2422 (1999)], large loss rates were observed when a time-varying magnetic field was used to tune a molecular Feshbach resonance state near the state of pairs of atoms belonging to the condensate many-body wavefunction. A mechanism is offered here to account for the observed losses, based on the deactivation of the resonant molecular state by interaction with a third condensate atom.

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