Vortices in two-dimensional Bose-Einstein condensates

Fanghua Lin, Tai‐Chia Lin

俊植 韓

Junsik Han, Makoto Tsubota

We study numerically the dynamics of quantized vortices in two-dimensional one-component and two-component Bose–Einstein condensates (BECs) trapped by a harmonic and box potentials. In two-component miscible BECs, we confirmed the tendency of the formation of Onsager vortices in both traps. The vortices in one component separate spatially from those in the other component, which comes from their intercomponent-coupling. We also discuss the decay of the number of vortices.

Tanja Rindler-Daller

Luca Giacomelli, Iacopo Carusotto

This paper shows that multiply quantized vortices in two-dimensional Bose-Einstein condensates display instabilities analogous to the ergoregion instabilities of rotating relativistic spacetimes. This implies that multiply quantized vortices are dynamically unstable in an otherwise uniform condensate.

Nicholas G. Parker, B. Jackson, A. Martin +1 more