Abstract
A new linear implicit finite difference method is proposed for the approximation of the solution to a periodic, initial value problem for a Schrödinger–Hirota equation. Optimal, second order convergence in the discrete \(H^1\)-norm is proved, assuming that \(\tau \), h and \(\tfrac{\tau ^4}{h}\) are sufficiently small, where \(\tau \) is the time-step and h is the space mesh-size. The convergence analysis is based on the investigation of a modified version of the proposed finite difference method, which is innovative and handles the stability difficulties due to the presence of a nonlinear derivative term in the equation. The efficiency of the proposed finite difference method is verified by results from numerical experiments.
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Zouraris, G.E. A Linear Implicit Finite Difference Discretization of the Schrödinger–Hirota Equation. J Sci Comput 77, 634–656 (2018). https://doi.org/10.1007/s10915-018-0718-6
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DOI: https://doi.org/10.1007/s10915-018-0718-6
Keywords
- Schrödinger–Hirota equation
- Hirota equation
- Linear implicit time stepping
- Finite differences
- Periodic boundary conditions
- Optimal order error estimates
- Bright Soliton solution