Matter-Wave Bright Solitons in Spin-Orbit Coupled Bose-Einstein Condensates
Vassos AchilleosDepartment of Physics, University of Athens, Panepistimiopolis, Zografos, Athens 15784, GreeceD. J. FrantzeskakisDepartment of Physics, University of Athens, Panepistimiopolis, Zografos, Athens 15784, GreeceP. G. KevrekidisDepartment of Mathematics and Statistics, University of Massachusetts, Amherst Massachusetts 01003-4515, USADmitry E. PelinovskyDepartment of Mathematics, McMaster University, Hamilton, Ontario L8S 4K1, Canada
2013en
ABI
Annotatsiya
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.
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