Pseudo-spectral solution of nonlinear Schro¨dinger equations
Journal of Computational Physics
Approximate solutions to the Zakharov equations via finite differences
Journal of Computational Physics
A conservative difference scheme for the Zhakarov equations
Journal of Computational Physics
Finite difference method for generalized Zakharov equations
Mathematics of Computation
Runge-Kutta methods for hyperbolic conservation laws with stiff relaxation terms
Journal of Computational Physics
Uniformly Accurate Schemes for Hyperbolic Systems with Relaxation
SIAM Journal on Numerical Analysis
Numerical Initial Value Problems in Ordinary Differential Equations
Numerical Initial Value Problems in Ordinary Differential Equations
On time-splitting spectral approximations for the Schrödinger equation in the semiclassical regime
Journal of Computational Physics
SIAM Journal on Scientific Computing
Numerical methods for the generalized Zakharov system
Journal of Computational Physics
Local spectral time splitting method for first- and second-order partial differential equations
Journal of Computational Physics
A time-splitting spectral scheme for the Maxwell-Dirac system
Journal of Computational Physics
A Time-Splitting Spectral Method for the Generalized Zakharov System in Multi-Dimensions
Journal of Scientific Computing
Efficient and accurate numerical methods for the Klein-Gordon-Schrödinger equations
Journal of Computational Physics
Local discontinuous Galerkin methods for the generalized Zakharov system
Journal of Computational Physics
Hi-index | 31.47 |
In this paper, we propose and study two time-splitting spectral methods for the generalized Zakharov system. These methods are spectrally accurate in space, second order in time, and unconditionally stable. The unconditional stability of the methods offers greater numerical efficiency than those given in previous papers, especially in the subsonic regime. Our numerical experiments confirm the accuracy and stability. In particular, we analyze their behavior in the subsonic regime. The first method, using the exact time integration in phase space for the wave equation for the nondispersive field, converges unformly with respect to the sound speed for the dispersive wave field, while the second method, using the Crank-Nicolson method in the same step, with an initial layer fix by an L-stable time discretization, converges uniformly with respect to the sound speed for both dispersive and nondispersive fields. Using these new methods we also study the collision behavior of two solitons, in the subsonic region as well as the transsonic region. We obtain numerical results which are quantitatively different from those reported in previous papers using lower resolution numerical techniques.