Spectral method for solving the system of equations of Schro¨dinger-Klein-Gordon field
Journal of Computational and Applied Mathematics
A first course in the numerical analysis of differential equations
A first course in the numerical analysis of differential equations
Multi-symplectic Runge-Kutta collocation methods for Hamiltonian wave equations
Journal of Computational Physics
Multisymplectic box schemes and the Korteweg-de Vries equation
Applied Numerical Mathematics - Special issue: Workshop on innovative time integrators for PDEs
On the preservation of phase space structure under multisymplectic discretization
Journal of Computational Physics
Multi-symplectic Runge-Kutta methods for nonlinear Dirac equations
Journal of Computational Physics
Efficient and accurate numerical methods for the Klein-Gordon-Schrödinger equations
Journal of Computational Physics
Journal of Computational Physics
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In this paper, we propose explicit multi-symplectic schemes for Klein-Gordon-Schrodinger equation by concatenating suitable symplectic Runge-Kutta-type methods and symplectic Runge-Kutta-Nystrom-type methods for discretizing every partial derivative in each sub-equation. It is further shown that methods constructed in this way are multi-symplectic and preserve exactly the discrete charge conservation law provided appropriate boundary conditions. In the aim of the commonly practical applications, a novel 2-order one-parameter family of explicit multi-symplectic schemes through such concatenation is constructed, and the numerous numerical experiments and comparisons are presented to show the efficiency and some advantages of the our newly derived methods. Furthermore, some high-order explicit multi-symplectic schemes of such category are given as well, good performances and efficiencies and some significant advantages for preserving the important invariants are investigated by means of numerical experiments.