Nonlinear Sciences – Pattern Formation and Solitons
Scientific paper
2010-07-14
Modern Physics Letters B vol. 24, p. 2911, 2010
Nonlinear Sciences
Pattern Formation and Solitons
10 pages, 26 figures, to appear in Modern Physics Letters B (Accepted 12 July, 2010)
Scientific paper
10.1142/S0217984910025243
A theoretical scheme for an experimental implementation involving bisolitonic matter waves from an attractive Bose-Einstein condensate, is considered within the framework of a non-perturbative approach to the associate Gross-Pitaevskii equation. The model consists of a single condensate subjected to an expulsive harmonic potential creating a double-condensate structure, and a gravitational potential that induces atomic exchanges between the two overlapping post condensates. Using a non-isospectral scattering transform method, exact expressions for the bright-matter-wave bisolitons are found in terms of double-lump envelopes with the co-propagating pulses displaying more or less pronounced differences in their widths and tails depending on the mass of atoms composing the condensate.
Dikande Alain Moise
Ebobenow Joseph
Ngek Isaiah Ndifon
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