Elastic Scattering Loss of Atoms from Colliding Bose-Einstein Condensate Wave Packets
Y B. Band, M Trippenbach, J P. Burke, Paul S. Julienne
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. This process can not be described by the Gross-Pitaevskii equation. We develop a slowly varying envelope technique for including the effects of this mechanism into the condensate dynamics. 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.
, Trippenbach, M.
, Burke, J.
and Julienne, P.
Elastic Scattering Loss of Atoms from Colliding Bose-Einstein Condensate Wave Packets, Physical Review Letters
(Accessed September 29, 2023)