Formation of multi-solitons and vortex bright solitons in Bose-condensed alkali-metal atoms

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dc.creatorSalasnich, Luca
dc.date2003-09-02
dc.date.accessioned2026-07-07T02:53:15Z
dc.date.available2026-07-07T02:53:15Z
dc.descriptionFormation of multi-solitons and vortex bright solitons in Bose-condensed alkali-metal atoms is analyzed by using the nonpolynomial Schordinger equation. A train of bright solitons is obtained from an axially homogeneous Bose-Einstein condensate by a sudden change of the scattering length from repulsive to attractive. We derive an analytical expression for the number of bright solitons generated by using this mechanism. The formula generalizes a previous formula obtained with the 1D Gross-Pitaevskii equation. In the second part we consider vortex bright solitons, namely cigar-shaped bright solitons with a nonzero angular quantum number $k$ along the axial direction. By using a variational approach we determine the shape of vortex bright solitons, showing that the critical number of atoms for the collapse of the vortex soliton increases with a larger $k$. Finally we calculate monopole and quadrupole collective oscillations of these vortex bright solitons.
dc.descriptionpresented to the XII International Laser Physics Workshop, August 24-29 2003, Hamburg (Germany); to be published in Laser Physics
dc.identifierhttps://arxiv.org/abs/cond-mat/0309071
dc.identifierhttp://arxiv.org/abs/cond-mat/0309071
dc.identifierLaser Physics, vol. 14, N. 2, 291-294 (2004)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22144
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titleFormation of multi-solitons and vortex bright solitons in Bose-condensed alkali-metal atoms
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