Berry's Phase Induced Bose-Einstein condensation into a Vortex State
Abstract
The existence of a geometric phase in magnetic traps can be used to Bose condense a magnetically trapped atomic gas into a vortex state. We propose an experimental setup where a magnetic trap together with a blue detuned laser beam form a multiply connected trap geometry. The local variation of the magnetic quantization axis induces a geometric or Berry's phase that allows the atoms to acquire an effective gauge charge interacting with the analog of a magnetic solenoid. It is shown that the ground state of such a system may be given by a vortex state. We also discuss the influence of atomic interactions on the proposed vortex production scheme in the context of present Bose-Einstein condensation experiments with dilute gases.
Cite
@article{arxiv.cond-mat/9811314,
title = {Berry's Phase Induced Bose-Einstein condensation into a Vortex State},
author = {M. Olshanii and M. Naraschewski},
journal= {arXiv preprint arXiv:cond-mat/9811314},
year = {2007}
}
Comments
5 pages, RevTeX, 3 EPS Figures