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arXiv · 0912.4420

Collective oscillations in ultracold atomic gases

J. T. Mendonça·R. Kaiser·H. Terças·J. Loureiro
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Abstract

Using both fluid and kinetic descriptions, where repulsive forces between near by atoms are included, we discuss the basic oscillations and waves of a cloud of ultra-cold atoms confined in a magneto-optical trap. The existence of a hybrid mode, with properties similar to both plasma and acoustic waves is described in detail. Tonks-Dattner resonances for confined hybrid modes in a spherical cloud are discussed and the prediction of a nonlinear coupling between the dipole resonanc and the hybrid modes is considered. Landau damping processes and quasi-linear diffusion in velocity space are also discussed.

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J. T. Mendonça, R. Kaiser, H. Terças, J. Loureiro. 2009-12-22. Collective oscillations in ultracold atomic gases. https://doi.org/10.1103/physreva.78.013408

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