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Elastic scattering loss of atoms from colliding Bose-Einstein condensate wavepackets

Y. B. Band·M. Trippenbach·J. P. Burke Jr.·P. S. Julienne
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Abstract

Bragg diffraction of atoms by light waves has been used to create high momentum components in a Bose-Einstein condensate. Collisions between atoms from two distinct momentum wavepackets cause elastic scattering that can remove a significant fraction of atoms from the wavepackets and cause the formation of a spherical shell of scattered atoms. We develop a slowly varying envelope technique that includes the effects of this loss on the condensate dynamics described by the Gross-Pitaevski equation. Three-dimensional numerical calculations are presented for two experimental situations: passage of a moving daughter condensate through a non-moving parent condensate, and four-wave mixing of matter waves.

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Y. B. Band, M. Trippenbach, J. P. Burke Jr., P. S. Julienne. 2000-05-01. Elastic scattering loss of atoms from colliding Bose-Einstein condensate wavepackets. https://doi.org/10.1103/physrevlett.84.5462

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