Computing Ground State Solution of Bose-Einstein Condensates Trapped in One-Dimensional Harmonic Potential

• Published in: Communications in theoretical physics Vol. 46; no. 5; pp. 873 - 878
• Main Author: YUAN Qing-Xin DING Guo-Hui
• Format: Journal Article
• Language: English
• Published: IOP Publishing 15.11.2006
• Subjects: Crank-Nicolson法; 玻色子-爱因斯坦冷凝物; 非线性Schrodinger方程
• ISSN: 0253-6102
• DOI: 10.1088/0253-6102/46/5/021

For Bose-Einstein condensates trapped in a harmonic potential well, we present numerical results from solving the tlme-dependent nonlinear Schrolinger equation based on the Crank-Nicolson method. With this method we are able to find the ground state wave function and energy by evolving the trial initial wave function in real and imaginary time spaces, respectively. In real time space, the results are in agreement with [Phys. Rev. A 51 （1995） 4704], but the trial wave function is restricted in a very small range. On the contrary, in imaginary time space, the trial wave function can be chosen widely, moreover, the results are stable.