Nonlinear Bose-Einstein-condensate Dynamics Induced by a Harmonic Modulation of the s-wave Scattering Length
Quantum Gases
2011-08-09 v2 Computational Physics
Abstract
In a recent experiment, a Bose-Einstein condensate of Li7 has been excited by a harmonic modulation of the atomic s-wave scattering length via Feshbach resonance. By combining an analytical perturbative approach with extensive numerical simulations we analyze the emerging nonlinear dynamics of the system on the mean-field Gross-Pitaevskii level at zero temperature. Resulting excitation spectra are presented and prominent nonlinear features are found: mode coupling, higher harmonics generation and significant shifts in the frequencies of collective modes. We indicate how nonlinear dynamical properties could be made clearly observable in future experiments and compared to our results.
Keywords
Cite
@article{arxiv.1106.4686,
title = {Nonlinear Bose-Einstein-condensate Dynamics Induced by a Harmonic Modulation of the s-wave Scattering Length},
author = {Ivana Vidanovic and Antun Balaz and Hamid Al-Jibbouri and Axel Pelster},
journal= {arXiv preprint arXiv:1106.4686},
year = {2011}
}
Comments
12 pages, 13 figures