Symplectic structure-preserving integrators for the two-dimensional Gross-Pitaevskii equation for BEC

Symplectic structure-preserving integrators for the two-dimensional Gross-Pitaevskii equation for BEC
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BEC 二维 Gross-Pitaevskii 方程的辛保结构积分器

DOI:
10.1016/j.cam.2011.04.019
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发表时间:
2011-07
影响因子:
2.4
通讯作者:
Chen, Jing
Chen, Jing
中科院分区:
数学2区
文献类型:
--
作者:
Kong, Linghua;Hong, Jialin;Fu, Fangfang;Chen, Jing

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辛积分器已被开发用于求解二维Gross-Pitaevskii方程。将方程转化为具有辛结构的哈密顿形式。然后,辛积分,包括中点规则,和分裂辛格式处理这个方程。结果表明,所提出的代码满足离散电荷守恒定律。此外,数值解的整体误差进行了理论估计。理论分析得到了一些数值模拟的支持。
Symplectic integrators have been developed for solving the two-dimensional Gross–Pitaevskii equation. The equation is transformed into a Hamiltonian form with symplectic structure. Then, symplectic integrators, including the midpoint rule, and a splitting symplectic scheme are developed for treating this equation. It is shown that the proposed codes fulfill the discrete charge conservation law. Furthermore, the global error of the numerical solution is theoretically estimated. The theoretical analysis is supported by some numerical simulations.
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发表时间: 2008-09
影响因子: 2.1
作者:
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期刊: Appl. Math. Comput.
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