The dynamics of ring dark soliton in inhomogeneous Bose-Einstein
condensates |
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Authors: | J-K Xue |
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Institution: | (1) Physics and Electronics Engineering College, Northwest Normal University, Lanzhou, 730070, P.R. China |
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Abstract: | The dynamics of the ring dark soliton in an inhomogeneous Bose-Einstein
condensates (BEC) with thin disk-shaped potential trapping is investigated
analytically and numerically. Analytical result shows that the ring dark
soliton is governed by a variable coefficients Korteweg-de Vries (KdV)
equation. The effect of the ring curvature (nonplanar geometry) and the
inhomogeneous of the background on soliton amplitude and the emitted
radiation profiles are obtained analytically. The theoretical results are
confirmed by the direct numerical results. |
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Keywords: | |
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