Stability and collapse of a hybrid Bose-Einstein condensate of atoms and molecules

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2001-11-14

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Iop Publishing Ltd

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The dynamics of stability and collapse of a trapped atomic Bose-Einstein condensate (BEC) coupled to a molecular one is studied using the time-dependent Gross-Pitaevskii (GP) equation including a nonlinear interaction term which can transform two atoms into a molecule and vice versa. We find an interesting oscillation of the number of atoms and molecules for a BEC of fixed mass. This oscillation is a consequence of continuous transformation in the condensate of two atoms into a molecule and vice versa. For the study of collapse an absorptive contact interaction and an imaginary quartic three-body recombination term are included in the GP equation. It is possible to have a collapse of one or both components when one or more of the nonlinear terms in the GP equation are attractive in nature, respectively.

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Inglês

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Journal of Physics B-atomic Molecular and Optical Physics. Bristol: Iop Publishing Ltd, v. 34, n. 21, p. 4231-4241, 2001.

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