Nonlinear resonances in δ-kicked Bose-Einstein Condensates

Details Nonlinear resonances in δ-kicked Bose-Einstein Condensates Nonlinear resonances in δ-kicked Bose-Einstein Condensates

2008-08-07

arxiv.org/abs/0808.1088v3

Phys. Rev. Lett 102 (2009) 014102

Physics

Atomic Physics

Scientific paper

10.1103/PhysRevLett.102.014102

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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