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Number of results
2007 | 112 | 6 | 1165-1170
Article title

Matter-Wave Bright Solitons of ^7Li Gas in an Expulsive Potential

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EN
Abstracts
EN
A Lagrangian based method is used to derive an analytical model for studying the dynamics of matter-wave bright soliton created in a harmonic potential which is attractive in the transverse direction and expulsive in the longitudinal direction. By means of sech trial functions and a Ritz optimization procedure, evolution equations are constructed for width, amplitude and nonlinear frequency chirp of the propagating soliton of the atomic condensate. Our equation for the width is an exact agreement with that of Carr and Castin, obtained by more detailed analysis. In agreement with the experiment of Paris group, the expulsive potential is found to cause the soliton to explode for N|a_s|=0.98, N being the number of atoms in the condensate and a_s -- the scattering length of the atom-atom interaction.
Keywords
EN
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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  • 2. L. Khaykovich, F. Schreck, G. Ferrari, T. Bourdel, J. Cubizolles, L.D. Carr, Y. Castin, C. Salomon, Science, 296, 1290 (2002)
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  • 5. L.D. Carr, Y. Castin, Phys. Rev. A 66, 063602 (2002)
  • 6. L. Salasnich, Prog. Theor. Phys. Suppl. 150, 415 (2003); L. Salasnich, Phys. Rev. A, 70, 053617 (2004)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv112n601kz
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