A Convergent Three-Step Numerical Method to Solve a Double-Fractional Two-Component Bose-Einstein Condensate

This manuscript introduces a discrete technique to estimate the solution of a double-fractional two-component Bose-Einstein condensate. The system consists of two coupled nonlinear parabolic partial differential equations whose solutions are two complex functions, and the spatial fractional derivatives are interpreted in the Riesz sense. Initial and homogeneous Dirichlet boundary data are imposed on a multidimensional spatial domain. To approximate the solutions, we employ a finite difference methodology. We rigorously establish the existence of numerical solutions along with the main numerical properties. Concretely, we show that the scheme is consistent in both space and time as well as stable and convergent. Numerical simulations in the one-dimensional scenario are presented in order to show the performance of the scheme. For the sake of convenience, A MATLAB code of the numerical model is provided in the appendix at the end of this work.

Automated summary

This manuscript presents a discrete technique for estimating the solution of a double-fractional two-component Bose-Einstein condensate, using a finite difference methodology for numerical approximation. The existence of numerical solutions is rigorously established, showing consistency in both space and time, stability, and convergence. A MATLAB code for the numerical model is provided for convenience.