时变Gross-Pitaevskii方程的数值解

Tsogbayar Tsednee, B. Tsednee, Tsookhuu Khinayat
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引用次数: 1

摘要

在这项工作中,我们采用分步技术结合勒让德伪谱表示来求解各种随时间变化的GrossPitaevskii方程(GPE)。我们的研究结果基于该方法应用于一维(1D)和二维(2D)问题的数值精度,表明它可以提供准确和稳定的解决方案。此外,该方法还应用于用GPE模拟的玻色-爱因斯坦凝聚体的动力学研究。在一维和二维谐波势中,模拟了具有排斥和吸引相互作用的凝结物的呼吸。
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Numerical solution to the time-dependent Gross-Pitaevskii equation
In this work we employ the split-step technique combined with a Legendre pseudospectral representation to solve various time-dependent GrossPitaevskii equations (GPE). Our findings based on the numerical accuracy of this approach applied for one-dimensional (1D) and two-dimensional (2D) problems show that it can provide accurate and stable solutions. Moreover, this approach has been applied to study the dynamics of the Bose-Einstein condensate which is modeled with the GPE. The breathing of condensate with a repulsive and attractive interactions trapped in 1D and 2D harmonic potentials has been simulated as well.
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