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March 2010 Dynamical Laws of the Coupled Gross-Pitaevskii Equations for Spin-1 Bose-Einstein Condensates
Weizhu Bao, Yanzhi Zhang
Methods Appl. Anal. 17(1): 49-80 (March 2010).

Abstract

In this paper, we derive analytically the dynamical laws of the coupled Gross- Pitaevskii equations (CGPEs) without/with an angular momentum rotation term and an external magnetic field for modelling nonrotating/rotating spin-1 Bose-Eintein condensates. We prove the conservation of the angular momentum expectation when the external trapping potential is radially symmetric in two dimensions and cylindrically symmetric in three dimensions; obtain a system of first order ordinary differential equations (ODEs) governing the dynamics of the density of each component and solve the ODEs analytically in a few cases; derive a second order ODE for the dynamics of the condensate width and show that it is a periodic function without/with a perturbation; construct the analytical solution of the CGPEs when the initial data is chosen as a stationary state with its center- of-mass shifted away from the external trap center. Finally, these dynamical laws are confirmed by the direct numerical simulation results of the CGPEs.

Citation

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Weizhu Bao. Yanzhi Zhang. "Dynamical Laws of the Coupled Gross-Pitaevskii Equations for Spin-1 Bose-Einstein Condensates." Methods Appl. Anal. 17 (1) 49 - 80, March 2010.

Information

Published: March 2010
First available in Project Euclid: 6 December 2010

zbMATH: 1206.35225
MathSciNet: MR2735100

Subjects:
Primary: 35Q55, 65N12, 65N35, 65T99, 65Z05, 81-08

Rights: Copyright © 2010 International Press of Boston

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Vol.17 • No. 1 • March 2010
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