2015/02/28 by A. P. Ivashin, Ivashin, Anatoly P., Yuri M. Poluektov +1
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Strong Light-Matter Interactions #Quantum, superfluid, helium dynamics
paper · pdf · doi:10.48550/arxiv.1503.00147
In contrast to one-component Bose-Einstein condensate case, the vortices in\ntwo-component condensate can have various complicated structures. The vortices\nin a space-homogeneous Bose-Einstein condensate have been studied in this\npaper. It is shown that the vortex structure is described by three\ndimensionless parameters. This is totally different from the usual\none-component condensate case, where an isolated vortex is described by a\nparameter-less dimensionless equation. The two-component vortex structure\nstrongly depends on the sign of "interaction" constant of the components. A few\ntypes of vortices with different qualitative structure are explored. We show\nthat the super-density vortices can exist, when the "interaction" constant is\npositive. The super-density vortices have the near-axis density greater than\nthe equilibrium density of a homogeneous space Bose-Einstein condensate. We\nalso show that the vortices with opposite direction of the condensate component\nrotation near the axis and far off the axis can exist.\n