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A high-order method for the numerical approximation of fractional nonlinear Schrödinger equations

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  • Durán, Angel
  • Reguera, Nuria

Abstract

In this paper, the periodic initial-value problem for the fractional nonlinear Schrödinger (fNLS) equation is discretized in space by a Fourier spectral Galerkin method and in time by diagonally implicit, high-order Runge–Kutta schemes, based on the composition with the implicit midpoint rule (IMR). Some properties and error estimates for the semidiscretization in space and for the full discretization are proved. The convergence results and the general performance of the scheme are illustrated with several numerical experiments.

Suggested Citation

  • Durán, Angel & Reguera, Nuria, 2026. "A high-order method for the numerical approximation of fractional nonlinear Schrödinger equations," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 250(C), pages 540-567.
    • Handle: RePEc:eee:matcom:v:250:y:2026:i:c:p:540-567
    DOI: 10.1016/j.matcom.2026.07.003
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