Conservative Numerical Schemes for the Nonlinear Fractional Schrödinger Equation

Wu, Longbin

doi:10.4208/eajam.110920.060121

Cited by 1 publication

(1 citation statement)

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“…They applied this framework to create new classes of fully-discrete conservative methods for several nonlinear dispersive wave equations. Wu et al [17] considered the Crank-Nicolson Fourier collocation method for the nonlinear fractional Schrödinger equation, which has the second-order accuracy in time and the spectral accuracy in space. They proved that at each discrete time the method preserves the discrete mass and energy conservation laws.…”

Section: Introductionmentioning

confidence: 99%

Conservative Three-Level Linearized Finite Difference Schemes for the Fisher Equation and Its Maximum Error Estimates

Gao¹,

Sun²

2023

NMTMA

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A three-level linearized difference scheme for solving the Fisher equation is firstly proposed in this work. It has the good property of discrete conservative energy. By the discrete energy analysis and mathematical induction method, it is proved to be uniquely solvable and unconditionally convergent with the secondorder accuracy in both time and space. Then another three-level linearized compact difference scheme is derived along with its discrete energy conservation law, unique solvability and unconditional convergence of order two in time and four in space. The resultant schemes preserve the maximum bound principle. The analysis techniques for convergence used in this paper also work for the Euler scheme, the Crank-Nicolson scheme and others. Numerical experiments are carried out to verify the computational efficiency, conservative law and the maximum bound principle of the proposed difference schemes.

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Section: Introductionmentioning

confidence: 99%