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Title: Fourth order exponential time differencing method with local discontinuous Galerkin approximation for coupled nonlinear Schrodinger equations

Journal Article · · Communications in Computational Physics
 [1];  [1];  [2]
  1. Middle Tennessee State Univ., Murfreesboro, TN (United States). Dept. of Mathematical Sciences. Center for Computational Science
  2. 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
Citation Metrics:
Cited by: 43 works
Citation information provided by
Web of Science

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Cited By (3)

An energy-preserving Crank-Nicolson Galerkin method for Hamiltonian partial differential equations: Energy-Preserving Crank-Nicolson Galerkin Method journal April 2016
Superconvergence of Ultra-Weak Discontinuous Galerkin Methods for the Linear Schrödinger Equation in One Dimension journal January 2020
Compact and efficient conservative schemes for coupled nonlinear Schrödinger equations: Compact and Efficient Conservative Schemes for CNLS journal February 2015