Driven collective instabilities in magneto-optical traps: a fluid-dynamical approach

Details Driven collective instabilities in magneto-optical traps: a fluid-dynamical approach Driven collective instabilities in magneto-optical traps: a fluid-dynamical approach

2009-12-22

arxiv.org/abs/0912.4318v2

EPL 89, 53001 (2010)

Physics

Condensed Matter

Quantum Gases

4 pages, 3 figures. Some minor changes in the published version.

Scientific paper

10.1209/0295-5075/89/53001

We present a theoretical model to describe an instability mechanism in ultra-cold gases, where long-range interactions are taken into account. Focusing on the nonlinear coupling between the collective (plasma-like) and the center-of-mass modes, we show that the resulting dynamics is governed by a parametric equation of the generalized Mathieu type and compute the corresponding stability chart. We apply our model to typical ranges of magneto-optical traps (MOT) parameters and find a good agreement with previous experimental observations.

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