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- W4300188049 abstract "The Schrodinger equation in the presence of an external electromagnetic field is an important problem in computational quantum mechanics. It also provides a nice example of a differential equation whose flow can be split with benefit into three parts. After presenting a splitting approach for three operators with two of them being unbounded, we exemplarily prove first-order convergence of Lie splitting in this framework. The result is then applied to the magnetic Schrodinger equation, which is split into its potential, kinetic and advective parts. The latter requires special treatment in order not to lose the conservation properties of the scheme. We discuss several options. Numerical examples in one, two and three space dimensions show that the method of characteristics coupled with a nonequispaced fast Fourier transform (NFFT) provides a fast and reliable technique for achieving mass conservation at the discrete level." @default.
- W4300188049 created "2022-10-03" @default.
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- W4300188049 date "2016-04-27" @default.
- W4300188049 modified "2023-09-27" @default.
- W4300188049 title "A splitting approach for the magnetic Schrodinger equation" @default.
- W4300188049 doi "https://doi.org/10.48550/arxiv.1604.08044" @default.
- W4300188049 hasPublicationYear "2016" @default.
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