High-order multiscale discontinuous Galerkin methods for the one-dimensional stationary Schrödinger equation

High-order multiscale discontinuous Galerkin methods for the one-dimensional stationary Schrödinger equation
复制标题

一维平稳薛定谔方程的高阶多尺度间断伽辽金方法

DOI:
10.1016/j.cam.2020.112962
复制
发表时间:
2020
影响因子:
2.4
通讯作者:
Wang, Wei
Wang, Wei
中科院分区:
数学2区
文献类型:
--
作者:
Dong, Bo;Wang, Wei

文献摘要

参考文献

被引文献

相似文献

在本文中,我们将先前关于具有振荡解的一维平稳Schrödinger方程(Dong et al., 2016)的二阶多尺度不连续Galerkin (DG)方法的工作扩展到高阶。我们提出了两类高阶多尺度有限元空间,并证明了当h足够小时,这些空间的DG方法在l2范数下对网格尺寸h有最优收敛性。数值结果表明,这两种多尺度DG方法在h≥ε时至少达到二阶收敛,且无共振误差;在h≥ε时达到最优的高阶收敛,其中ε为波长尺度。我们还展示了它们在谐振隧道二极管(RTD)模型应用中捕获Schrödinger方程高振荡解的能力。
In this paper, we extend our previous work on the second-order multiscale discontinuous Galerkin (DG) method for one-dimensional stationary Schrödinger equations with oscillating solutions (Dong et al., 2016) to high order. We propose two types of high-order multiscale finite element spaces, and prove that the resulting DG methods with these spaces converge optimally with respect to the mesh size h in L 2 norm when h is small enough. Numerically we observe that these two multiscale DG methods achieve at least the second-order convergence without any resonance errors when h≳ ε and optimal high-order convergence when h≲ ε, where ε is the scale of the wave length. We also demonstrate their ability to capture highly oscillating solutions of the Schrödinger equation in the application of the resonant tunneling diode (RTD) model.
DOI: --
发表时间: 2014
影响因子: 2.5
作者:
Yifan Zhang;Wei Wang;J. Guzmán;Chi
通讯作者: Chi
DOI: --
发表时间: 2008
期刊:
影响因子: --
作者:
C. Negulescu
通讯作者: C. Negulescu
DOI: --
发表时间: 2005
期刊:
影响因子: --
作者:
J. Aarnes;B. Heimsund
通讯作者: B. Heimsund
2D 纳米级 MOSFET 仿真方案:基于 WKB 的方法
DOI: --
发表时间: 2004
期刊:
影响因子: --
作者:
C. Negulescu;N. Ben Abdallah;E. Polizzi;M. Mouis
通讯作者: M. Mouis
开放量子系统中输运的多尺度模拟:共振和 WKB 插值
DOI: --
发表时间: 2006
影响因子: 4.1
作者:
N. Abdallah;O. Pinaud
通讯作者: O. Pinaud