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Journal of the Physical Society of Japan

Multicomponent Bright Solitons in F=2 Spinor Bose-Einstein Condensates(General)

Masaru Uchiyama, Jun’ichi Ieda, Miki Wadati

Published Jul 15, 2007• 2 citations
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arXiv:cond-mat/0404569•Physical Review Letters•Nov 4, 2004•263 citations
We propose an integrable model of a multicomponent spinor Bose-Einstein condensate in one dimension, which allows an exact description of the dynamics of bright solitons with spin degrees of freedom. We consider specifically an atomic condensate in the F=1 hyperfine state confined by an optical dipole trap. When the mean-field interaction is attractive (c(0)<0) and the spin-exchange interaction of a spinor condensate is ferromagnetic (c(2)<0), we prove that the system possesses a completely integrable point leading to the existence of multiple bright solitons. By applying results from the inverse scattering method, we analyze a collision law for two-soliton solutions and find that the dynamics can be explained in terms of the spin precession.