arXiv:cond-mat/0207579 · Journal of Physics B Atomic Molecular and Optical Physics

Resonance in Bose Einstein condensate oscillation from a periodic variation in scattering length

Sadhan K Adhikari

Published Feb 25, 2003• 28 citations

Abstract

Using the explicit numerical solution of the axially symmetric Gross–Pitaevskii equation, we study the oscillation of the Bose–Einstein condensate (BEC) induced by a periodic variation in the atomic scattering length a . When the frequency of oscillation of a is an even multiple of the radial or axial trap frequency, respectively, the radial or axial oscillation of the condensate exhibits resonance with a novel feature. In this nonlinear problem without damping, at resonance in the steady state the amplitude of oscillation passes through a maximum and minimum. Such a growth and decay cycle of the amplitude may keep on repeating. Similar behaviour is also observed in a rotating BEC.

DOI: 10.1088/0953-4075/36/6/303

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