Bright Solitons in Asymmetrically Trapped Bose-Einstein Condensates

• Authors: Sk. Golam Ali , B. Talukdar , S. Roy
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

03.75.-b; 03.75.Kk; 05.30.Jp

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: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 3
• Pages: 289-297

Dates

published

2007-03

received

2007-02-12

Contributors

author

Sk. Golam Ali

• Department of Physics, Visva-Bharati University, Santiniketan 731235, India

author

B. Talukdar

• Department of Physics, Visva-Bharati University, Santiniketan 731235, India

author

S. Roy

• Department of Physics, Visva-Bharati University, Santiniketan 731235, India

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Identifiers

DOI

10.12693/APhysPolA.111.289