Vector azimuthons in two-component Bose-Einstein condensates
نویسندگان
چکیده
We introduce matter-wave vector azimuthons, i.e., spatially localized vortex states with azimuthal modulations of density, in multicomponent Bose-Einstein condensates. These localized states generalize spatially modulated vortex solitons introduced earlier in nonlinear optics A. S. Desyatnikov, A. A. Sukhorukov, and Yu. S. Kivshar, Phys. Rev. Lett. 95, 203904 2005 and Bose-Einstein condensates V. M. Lashkin, Phys. Rev. A 77, 025602 2008 . We find, numerically, nonrotating and rotating two-component azimuthons in a BoseEinstein condensate with a negative scattering length confined by a quasi-two-dimensional parabolic trap.
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