Multiple dark-bright solitons in atomic Bose-Einstein condensates

Details Multiple dark-bright solitons in atomic Bose-Einstein condensates Multiple dark-bright solitons in atomic Bose-Einstein condensates

2011-04-21

arxiv.org/abs/1104.4359v1

Physics

Condensed Matter

Quantum Gases

10 pages, 6 figures

Scientific paper

We present experimental results and a systematic theoretical analysis of dark-br ight soliton interactions and multiple-dark-bright soliton complexes in atomic t wo-component Bose-Einstein condensates. We study analytically the interactions b etween two-dark-bright solitons in a homogeneous condensate and, then, extend ou r considerations to the presence of the trap. An effective equation of motion is derived for the dark-bright soliton center and the existence and stability of stationary two-dark-bright soliton states is illustrated (with the bright components being either in- or out-of-phase). The equation of motion provides the characteristic oscillation frequencies of the solitons, in good agreement with the eigenfrequencies of the anomalous modes of the system.

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