Bose-Einstein condensates with vortices in rotating traps

Details Bose-Einstein condensates with vortices in rotating traps Bose-Einstein condensates with vortices in rotating traps

1999-06-10

arxiv.org/abs/cond-mat/9906144v2

Eur. Phys. J. D. 7, 399-412 (1999).

Physics

Condensed Matter

15 pages, 16 figures, to be published in Eur. Phys. Jour. D; one reference updated

Scientific paper

10.1007/s100530050584

We investigate minimal energy solutions with vortices for an interacting Bose-Einstein condensate in a rotating trap. The atoms are strongly confined along the axis of rotation z, leading to an effective 2D situation in the x-y plane. We first use a simple numerical algorithm converging to local minima of energy. Inspired by the numerical results we present a variational Ansatz in the regime where the interaction energy per particle is stronger than the quantum of vibration in the harmonic trap in the x-y plane, the so-called Thomas-Fermi regime. This Ansatz allows an easy calculation of the energy of the vortices as function of the rotation frequency of the trap; it gives a physical understanding of the stabilisation of vortices by rotation of the trap and of the spatial arrangement of vortex cores. We also present analytical results concerning the possibility of detecting vortices by a time-of-flight measurement or by interference effects. In the final section we give numerical results for a 3D configuration.

Affiliated with

Also associated with

No associations

Rating

Bose-Einstein condensates with vortices in rotating traps does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Bose-Einstein condensates with vortices in rotating traps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bose-Einstein condensates with vortices in rotating traps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-199314