Period-doubled breathing in trapped Bose-Einstein condensates

Details Period-doubled breathing in trapped Bose-Einstein condensates Period-doubled breathing in trapped Bose-Einstein condensates

2004-05-14

arxiv.org/abs/cond-mat/0405316v1

Physics

Condensed Matter

Other Condensed Matter

4 pages, 5 figures

Scientific paper

The response of a trapped Bose-Einstein condensed gas to a periodic driving force is studied theoretically in the framework of the nonlinear Gross-Pitaevskii equation. The monopole mode is driven by periodical modulation of the frequency of the isotropic harmonic trapping potential. Period-doubled motion is shown to occur when the driving is strong and close to resonance with the monopole mode. A variational model predicts chaotic oscillations but is found to disagree with the full solutions to the Gross-Pitaevskii equation.

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