Decoherence due to three-body loss and its effect on the state of a Bose-Einstein condensate
arXiv:cond-mat/0208319 · doi:10.1103/PhysRevLett.89.140402
Abstract
A Born-Markov master equation is used to investigate the decoherence of the state of a macroscopically occupied mode of a cold atom trap due to three-body loss. In the large number limit only coherent states remain pure for times longer than the decoherence time: the time it takes for just three atoms to be lost from the trap. For large numbers of atoms (N>10^4) the decoherence time is found to be much faster than the phase collapse time caused by intra-trap atomic collisions.
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