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Stable Hopf solitons in rotating Bose-Einstein condensates

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arxiv 1508.01697 v2 pith:4ZR2PCZW submitted 2015-08-07 cond-mat.quant-gas

Stable Hopf solitons in rotating Bose-Einstein condensates

Y. M. Bidasyuk , A. V. Chumachenko , O. O. Prikhodko , S. I. Vilchinskii , M. Weyrauch , A. I. Yakimenko This is my paper
classification cond-mat.quant-gas
keywords hopfsolitonsbose-einsteinrotatingatomicatomscarriescomplex
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We reveal that Hopf solitons can be stabilized in rotating atomic Bose-Einstein condensate. The Hopfion is a matter-wave vortex complex which carries two independent winding numbers. Such a topological solitonic structure results from a superfluid flow of atoms simultaneously quantized in poloidal and toroidal directions. In the framework of a dissipative mean-field model we observe different unstable evolution scenarios of the Hopfions. We demonstrate energetic and dynamical stability of the Hopf solitons under experimentally feasible conditions.

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