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Excitation spectroscopy of vortex states in dilute Bose-condensed gases

R. J. Dodd·K. Burnett·Mark Edwards·C. W. Clark
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Abstract

We apply linear-response analysis to the Gross-Pitaevskii equation to obtain the excitation frequencies of a Bose-Einstein condensate in a vortex state, and apply it to a system of Rubidium atoms confined in a time-averaged orbiting potential trap. The excitation frequencies of a vortex differ significantly from those of the ground state, and may therefore be used to obtain a spectroscopic signature of the presence of a vortex state.

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R. J. Dodd, K. Burnett, Mark Edwards, C. W. Clark. 1996-10-10. Excitation spectroscopy of vortex states in dilute Bose-condensed gases. https://doi.org/10.1103/physreva.56.587

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