Nonlinear resonances in \delta-kicked Bose-Einstein Condensates
Atomic Physics
2009-11-13 v3 Other Condensed Matter
Quantum Physics
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.
Cite
@article{arxiv.0808.1088,
title = {Nonlinear resonances in \delta-kicked Bose-Einstein Condensates},
author = {T. S. Monteiro and A Rancon and J. Ruostekoski},
journal= {arXiv preprint arXiv:0808.1088},
year = {2009}
}