Composite structure of vortices in two-component
Bose-Einstein condensate

• Authors: Anatoly P. Ivashin , Yuri M. Poluektov
• Languages of publication: EN

Abstracts

EN

In contrast to one-component Bose-Einstein condensate
case, the vortices in two-component condensate
can have various complicated structures. The vortices in a
space-homogeneous Bose-Einstein condensate have been
studied in this paper. It is shown that the vortex structure
is described by three dimensionless parameters. This is totally
different from the usual one-component condensate
case,where an isolated vortex is described by a parameterless
dimensionless equation. The two-component vortex
structure strongly depends on the sign of “interaction”
constant of the components. A few types of vortices with
different qualitative structure are explored. We show that
the “super-density vortices” can exist, when the “interaction”
constant is positive. The “super-density vortices”
have the near-axis density greater than the equilibrium
density of a homogeneous space Bose-Einstein condensate.
We also show that the vortices with opposite direction
of the condensate component rotation near the axis
and far off the axis can exist.

Keywords

EN

Bose Einstein multi-component condensate; Gross-Pitaevskii equation; quantum vortex

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2015
• Volume: 13
• Issue: 1

Dates

accepted

11 - 9 - 2015

received

21 - 3 - 2015

online

26 - 10 - 2015

Contributors

author

Anatoly P. Ivashin

• A.I. Akhiezer Institute for Theoretical Physics,
  NSC “Kharkiv Institute of Physics and Technology” 1, Akademichna
  Str., Kharkiv UA-61108, Ukraine
• Technology” 1, Akademichna Str., Kharkiv UA-61108, Ukraine

author

Yuri M. Poluektov

• A.I. Akhiezer Institute for Theoretical Physics,
  NSC “Kharkiv Institute of Physics and Technology” 1, Akademichna
  Str., Kharkiv UA-61108, Ukraine

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Identifiers

DOI

10.1515/phys-2015-0036