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arXiv · 0808.1088

Nonlinear resonances in δ-kicked Bose-Einstein Condensates

T. S. Monteiro·A Rancon·J. Ruostekoski
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Abstract

We investigate the Quantum Resonance (QR) regime of a periodically kicked atomic Bose-Einstein condensate. We find that the clearest indicator of the nonlinear dynamics is a surprisingly abrupt cut-off which appears on the main "Talbot time" QR. We show that this is due and excitation path combining both Beliaev and Landau processes, with some analogies to nonlinear self-trapping. Investigation of dynamical instability reveals further symptoms of nonlinearity such as a regime of exponential oscillations.

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T. S. Monteiro, A Rancon, J. Ruostekoski. 2008-09-17. Nonlinear resonances in δ-kicked Bose-Einstein Condensates. https://doi.org/10.1103/physrevlett.102.014102

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