Dynamics of rotating Bose-Einstein condensate with vortices

Narimasa Sasa, Masahiko Machida, Hideki Matsumoto

Kenichi Kasamatsu, Makoto Tsubota

Makoto Tsubota, Kenichi Kasamatsu

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.

Ian R. Coddington, P. C. Haljan, Peter Engels +1 more

R. Kishor Kumar, Paulsamy Muruganandam

We study the influence of dipole–dipole interaction on the formation of vortices in a rotating dipolar Bose–Einstein condensate (BEC) of 52 Cr and 164 Dy atoms in quasi two-dimensional geometry. By numerically solving the corresponding time-dependent mean-field Gross–Pitaevskii equation, we show that the dipolar interaction enhances the number of vortices, while a repulsive contact interaction increases the stability of the vortices. Furthermore, an ordered vortex lattice of a relatively large number of vortices is found in a strongly dipolar BEC.