  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.
