Optimal error estimate of a linear Fourier pseudo-spectral scheme for two dimensional Klein–Gordon–Schrödinger equations
Optimal error estimate of a linear Fourier pseudo-spectral scheme for two dimensional Klein–Gordon–Schrödinger equations
复制标题
二维 Klein-Gordon-Schrödinger 方程的线性傅立叶伪谱格式的最优误差估计
DOI:
10.1016/j.jmaa.2018.08.045
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发表时间:
2018-12
影响因子:
1.3
通讯作者:
Jialing Wang
中科院分区:
文献类型:
--
作者:
Qi Hong;Yushun Wang;Jialing Wang
The focus of this paper is on the optimal error bounds of a Fourier pseudo-spectral conservative scheme for solving the 2-dimensional nonlinear Klein–Gordon–Schrödinger equations. The proposed Fourier pseudo-spectral scheme not only conserves the mass and energy in the discrete level but also is efficient in practical computation because only two linear systems need to be solved at each time step. Based on the equivalence between the semi-norm derived by the Fourier pseudo-spectral method and that by the finite difference method, the pseudo-spectral solution of the proposed scheme is proved strictly to be bounded and convergent with the order of O (N− r+ τ 2) in the discrete L 2 norm, where N is the number of nodes and τ is the time step size. Some numerical experiments are carried out to validate the theoretical analysis.
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DOI:
10.1016/0362-546x(95)00017-p
发表时间:
1996-08
影响因子:
1.4
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期刊:
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影响因子:
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通讯作者:
Ting-chun Wang;B. Guo;Qiubin Xu