Faraday waves in Bose-Einstein condensates
arXiv:0710.5921 · doi:10.1103/PhysRevA.76.063609
Abstract
Motivated by recent experiments on Faraday waves in Bose-Einstein condensates we investigate both analytically and numerically the dynamics of cigar-shaped Bose-condensed gases subject to periodic modulation of the strength of the transverse confinement. We offer a fully analytical explanation of the observed parametric resonance, based on a Mathieu-type analysis of the non-polynomial Schr{ö}dinger equation. The theoretical prediction for the pattern periodicity versus the driving frequency is directly compared with the experimental data, yielding good qualitative and quantitative agreement between the two. These results are corroborated by direct numerical simulations of both the one-dimensional non-polynomial Schr{ö}dinger equation and of the fully three-dimensional Gross-Pitaevskii equation.
10 pages, 9 figures, submitted to Phys. Rev. A
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