Solving the spin-2 Gross-Pitaevskii equation using exact nonlinear dynamics and symplectic composition

Abstract

We develop numerical methods for solving the spin-2 Gross-Pitaevskii equation. The basis of our work is a two-way splitting of this evolution equation that leads to two exactly solvable subsystems. Utilizing second-order and fourth-order composition schemes we realize two fully symplectic integration algorithms, the first such algorithms for evolving spin-2 condensates. We demonstrate the accuracy of these algorithms against other methods on application to an exact continuous wave solution that we derive.

8 pages, 3 figures. arXiv admin note: text overlap with arXiv:1602.06638

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