Analytical Solutions to the Time-Independent Gross-Pitaevskii Equation with a Harmonic Trap

作者:Shi Yu Ren*; Wang Guang Hui; Liu Cong Bo; Zhou Zhi Gang; Yang Hong Juan
来源:Chinese Physics Letters, 2012, 29(11): 110302.
DOI:10.1088/0256-307X/29/11/110302

摘要

We try to find the analytical solutions to the time-independent Gross-Pitaevskii equation, a nonlinear Schrodinger equation used in the simulation of Bose-Einstein condensates trapped in a harmonic potential. Both the homotopy analysis method and the Galerkin spectral method are applied. We investigate the one-dimensional case and obtain the approximate analytical solutions successfully. Comparison between the analytical solutions and the numerical solutions has been made. The results indicate that they agree very well with each other when the atomic interaction is not too strong.