Matter-wave bright solitons in spin-orbit coupled Bose-Einstein condensates

We study matter-wave bright solitons in spin-orbit coupled Bose-Einstein condensates with attractive interactions. We use a multiscale expansion method to identify solution families for chemical potentials in the semi-infinite gap of the linear energy spectrum. Depending on the linear and spin-orbit...

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Bibliographic Details
Published in:Physical review letters 2013-06, Vol.110 (26), p.264101-264101, Article 264101
Main Authors: Achilleos, V, Frantzeskakis, D J, Kevrekidis, P G, Pelinovsky, D E
Format: Article
Language:English
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Summary:We study matter-wave bright solitons in spin-orbit coupled Bose-Einstein condensates with attractive interactions. We use a multiscale expansion method to identify solution families for chemical potentials in the semi-infinite gap of the linear energy spectrum. Depending on the linear and spin-orbit coupling strengths, the solitons may present either a sech2-shaped or a modulated density profile reminiscent of the stripe phase of spin-orbit coupled repulsive Bose-Einstein condensates. Our numerical results are in excellent agreement with our analytical findings and demonstrate the potential robustness of solitons for experimentally relevant conditions.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.110.264101