High-order time splitting methods for the nonlinear Gross-Pitaevskii equation
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866913169719427072 |
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| author | Ben, Roberto Besteiro, Agustín Rial, Diego |
| author_facet | Ben, Roberto Besteiro, Agustín Rial, Diego |
| contents | We propose a high-order numerical methodology for computing the ground state and time evolution of the two-dimensional Gross-Pitaevskii equation with harmonic trapping potential. The ground state is obtained by combining normalized gradient flow with time-splitting schemes featuring strictly positive coefficients, which makes them suitable for both dissipative and Hamiltonian regimes and avoids the negative time steps required by classical symplectic methods. The computational cost of these methods grows quadratically with the order, in contrast to the exponential growth of symplectic alternatives. Numerical benchmarks assess ground state convergence under different initializations, long-time preservation of mass and Hamiltonian energy for varying mass constraints, and the cost-accuracy trade-off for orders q = 2, 4,..., 14. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2605_29362 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | High-order time splitting methods for the nonlinear Gross-Pitaevskii equation Ben, Roberto Besteiro, Agustín Rial, Diego Numerical Analysis Analysis of PDEs 35Q55 - 65M70 - 35Q40 We propose a high-order numerical methodology for computing the ground state and time evolution of the two-dimensional Gross-Pitaevskii equation with harmonic trapping potential. The ground state is obtained by combining normalized gradient flow with time-splitting schemes featuring strictly positive coefficients, which makes them suitable for both dissipative and Hamiltonian regimes and avoids the negative time steps required by classical symplectic methods. The computational cost of these methods grows quadratically with the order, in contrast to the exponential growth of symplectic alternatives. Numerical benchmarks assess ground state convergence under different initializations, long-time preservation of mass and Hamiltonian energy for varying mass constraints, and the cost-accuracy trade-off for orders q = 2, 4,..., 14. |
| title | High-order time splitting methods for the nonlinear Gross-Pitaevskii equation |
| topic | Numerical Analysis Analysis of PDEs 35Q55 - 65M70 - 35Q40 |
| url | https://arxiv.org/abs/2605.29362 |