Comparison of Splitting methods for Gross-Pitaevskii Equation
It provides a comparative analysis of numerical methods for solving the Gross-Pitaevskii equation, which is relevant for researchers in computational physics and nonlinear waves.
The paper compares splitting methods for numerically solving the Gross-Pitaevskii equation, evaluating conservation of L2-norm against analytical solutions, and demonstrates advantages for large time-domains in soliton applications.
In this paper, we discuss the different splitting approaches to solve the Gross-Pitaevskii equation numerically. We consider conservative finite-difference schemes and spectral methods for the spatial discretisation. Further, we apply implicit or explicit time-integrators and combine such schemes with different splitting approaches. The numerical solutions are compared based on the conservation of the $L_2$-norm with the analytical solutions. The advantages of the splitting methods for large time-domains are presented in several numerical examples of different solitons applications.