Topological phases and circulating states of Bose-Einstein condensates

Details Topological phases and circulating states of Bose-Einstein condensates Topological phases and circulating states of Bose-Einstein condensates

1998-10-20

arxiv.org/abs/quant-ph/9810059v1

Physics

Quantum Physics

4 pages, 3 figures, accepted for publication in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.59.639

We show that the quantum topological effect predicted by Aharonov and Casher (AC effect) [Phys. Rev. Lett. 53, 319 (1984)] may be used to create circulating states of magnetically trapped atomic Bose-Einstein condensates (BEC). A simple experimental setup is suggested based on a multiply connected geometry such as a toroidal trap or a magnetic trap pinched by a blue-detuned laser. We give numerical estimates of such effects within the current atomic BEC experiments, and point out some interesting properties of the associated quantized circulating states.

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