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Abstracts
We study the dynamics of bright solitons in a Bose-Einstein condensate confined in a highly asymmetric trap. While working within the framework of a variational approach we carry out the stability analysis of the Bose-Einstein condensate solitons against collapse. When the number of atoms in the soliton exceeds a critical number N_c, it undergoes the so-called primary collapse. We find an analytical expression for N_c in terms of appropriate experimental quantities that are used to produce and confine the condensate. We further demonstrate that, in the geometry of the problem considered, the width of the soliton varies inversely as the number of constituent atoms.
Discipline
- 03.75.Kk: Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow
- 05.30.Jp: Boson systems(for static and dynamic properties of Bose-Einstein condensates, see 03.75.Hh and 03.75.Kk; see also 67.10.Ba Boson degeneracy in quantum fluids)
- 03.75.-b: Matter waves(for atom interferometry, see 37.25.+k; see also 67.85.-d ultracold gases, trapped gases in quantum fluids and solids)
Journal
Year
Volume
Issue
Pages
289-297
Physical description
Dates
published
2007-03
received
2007-02-12
Contributors
author
- Department of Physics, Visva-Bharati University, Santiniketan 731235, India
author
- Department of Physics, Visva-Bharati University, Santiniketan 731235, India
author
- Department of Physics, Visva-Bharati University, Santiniketan 731235, India
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv111n301kz