Structure of excited vortices with higher angular momentum in Bose-Einstein condensates

Details Structure of excited vortices with higher angular momentum in Bose-Einstein condensates Structure of excited vortices with higher angular momentum in Bose-Einstein condensates

2003-09-22

arxiv.org/abs/cond-mat/0309487v1

Phys. Rev. A 70, 043626 (2004)

Physics

Condensed Matter

4 pages, 1 figure

Scientific paper

10.1103/PhysRevA.70.043626

The structure of vortices in Bose-Einstein condensed atomic gases is studied taking into account many-body correlation effects. It is shown that for excited vortices the particle density in the vortex core increases as the angular momentum of the system increases. The core density can increase by several times with only a few percent change in the angular momentum. This result provides an explanation for the observations in which the measured angular momentum is higher than the estimation based on counting the number of vortices, and the visibility of the vortex cores is simultaneously reduced. The calculated density profiles for the excited vortices are in good agreement with experimental measurements.

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