Fourth order exponential time differencing method with local discontinuous Galerkin approximation for coupled nonlinear Schrodinger equations
- Middle Tennessee State Univ., Murfreesboro, TN (United States). Dept. of Mathematical Sciences. Center for Computational Science
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computer Science and Mathematics Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Mathematics
In this paper, we study a local discontinuous Galerkin method combined with fourth order exponential time differencing Runge-Kutta time discretization and a fourth order conservative method for solving the nonlinear Schrödinger equations. Based on different choices of numerical fluxes, we propose both energy-conserving and energy-dissipative local discontinuous Galerkin methods, and have proven the error estimates for the semi-discrete methods applied to linear Schrödinger equation. The numerical methods are proven to be highly efficient and stable for long-range soliton computations. Finally, extensive numerical examples are provided to illustrate the accuracy, efficiency and reliability of the proposed methods.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
- Contributing Organization:
- Middle Tennessee State Univ., Murfreesboro, TN (United States)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1286709
- Journal Information:
- Communications in Computational Physics, Vol. 17, Issue 02; ISSN 1815-2406
- Publisher:
- Global Science PressCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
An energy-preserving Crank-Nicolson Galerkin method for Hamiltonian partial differential equations: Energy-Preserving Crank-Nicolson Galerkin Method
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journal | April 2016 |
Superconvergence of Ultra-Weak Discontinuous Galerkin Methods for the Linear Schrödinger Equation in One Dimension
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journal | January 2020 |
Compact and efficient conservative schemes for coupled nonlinear Schrödinger equations: Compact and Efficient Conservative Schemes for CNLS
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journal | February 2015 |
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