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- W4308759110 abstract "In this paper, numerical experiments are carried out to investigate the impact of penalty parameters in the numerical traces on the resonance errors of high order multiscale discontinuous Galerkin (DG) methods [6, 7] for one-dimensional stationary Schr{o}dinger equation. Previous work showed that penalty parameters were required to be positive in error analysis, but the methods with zero penalty parameters worked fine in numerical simulations on coarse meshes. In this work, by performing extensive numerical experiments, we discover that zero penalty parameters lead to resonance errors in the multiscale DG methods, and taking positive penalty parameters can effectively reduce resonance errors and make the matrix in the global linear system have better condition numbers." @default.
- W4308759110 created "2022-11-15" @default.
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- W4308759110 date "2022-11-09" @default.
- W4308759110 modified "2023-09-28" @default.
- W4308759110 title "Numerical investigations on the resonance errors of multiscale discontinuous Galerkin methods for one-dimensional stationary Schr{o}dinger equation" @default.
- W4308759110 doi "https://doi.org/10.48550/arxiv.2211.04900" @default.
- W4308759110 hasPublicationYear "2022" @default.
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