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

Adán J. Serna-Reyes, Jorge E. Macías-Díaz and Nuria Reguera
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Adán J. Serna-Reyes: Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes 20131, Mexico
Jorge E. Macías-Díaz: Department of Mathematics and Didactics of Mathematics, School of Digital Technologies, Tallinn University, 10120 Tallinn, Estonia
Nuria Reguera: Departamento de Matemáticas y Computación, Universidad de Burgos, IMUVA, 09001 Burgos, Spain

Mathematics, 2021, vol. 9, issue 12, 1-22

Abstract: 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.

Keywords: two-component Bose–Einstein condensate; double-fractional system; numerically efficient scheme (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2021
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