A Composite Fermion Description of Rotating Bose-Einstein Condensates

Details A Composite Fermion Description of Rotating Bose-Einstein Condensates A Composite Fermion Description of Rotating Bose-Einstein Condensates

1999-07-30

arxiv.org/abs/cond-mat/9907498v1

Phys. Rev. B 60, R16279 (1999)

Physics

Condensed Matter

5 pages, 3 eps-figures, revtex with epsf.tex and multicol.sty

Scientific paper

10.1103/PhysRevB.60.R16279

We study the properties of rotating Bose-Einstein condensates in parabolic traps, with coherence length large compared to the system size. In this limit, it has been shown that unusual groundstates form which cannot be understood within a conventional many-vortex picture. Using comparisons with exact numerical results, we show that these groundstates can be well-described by a model of non-interacting ``composite fermions''. Our work emphasises the similarities between the novel states that appear in rotating Bose-Einstein condensates and incompressible fractional quantum Hall states.

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