Controlling Grey Solitons in a Trap

Details Controlling Grey Solitons in a Trap Controlling Grey Solitons in a Trap

2009-03-27

arxiv.org/abs/0903.4859v2

Physics

Condensed Matter

Other Condensed Matter

8 Pages, 4 Figures

Scientific paper

Experimentally observed grey solitons are analytically extracted from a physically viable \GP equation. Associated Lieb and Bogoliubov modes are calculated for these class of solitons. It is observed that, these nonlinear excitations have strong coupling with the trap at low momenta and hence can be effectively isolated from the Bogoliubov sound modes, which responds weakly to harmonic confinement. This strong coupling with the trap also makes the grey soliton amenable for control and manipulation through both trap modulation and temporal variation of the two-body interaction.

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