Explicit symmetric low-regularity integrators for the semilinear Klein-Gordon equation
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866917209088983040 |
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| author | Shen, Zhirui Wang, Bin |
| author_facet | Shen, Zhirui Wang, Bin |
| contents | This paper is concerned with the design and analysis of symmetric low-regularity integrators for the semilinear Klein-Gordon equation. We first propose a general symmetrization procedure that allows for the systematic construction of symmetric schemes from existing explicit (non-symmetric) integrators. Applying this procedure, we derive two novel schemes. Error analyses show that both integrators achieve their optimal convergence orders in the energy space under significantly relaxed regularity assumptions. Furthermore, the symmetry property ensures that the convergence order of a first-order symmetric scheme improves as the regularity of the exact solution increases. A numerical experiment demonstrates that the proposed second-order symmetric scheme nearly preserves the system energy over extended periods. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_12246 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Explicit symmetric low-regularity integrators for the semilinear Klein-Gordon equation Shen, Zhirui Wang, Bin Numerical Analysis 35L70, 65M12, 65M15, 65M70 This paper is concerned with the design and analysis of symmetric low-regularity integrators for the semilinear Klein-Gordon equation. We first propose a general symmetrization procedure that allows for the systematic construction of symmetric schemes from existing explicit (non-symmetric) integrators. Applying this procedure, we derive two novel schemes. Error analyses show that both integrators achieve their optimal convergence orders in the energy space under significantly relaxed regularity assumptions. Furthermore, the symmetry property ensures that the convergence order of a first-order symmetric scheme improves as the regularity of the exact solution increases. A numerical experiment demonstrates that the proposed second-order symmetric scheme nearly preserves the system energy over extended periods. |
| title | Explicit symmetric low-regularity integrators for the semilinear Klein-Gordon equation |
| topic | Numerical Analysis 35L70, 65M12, 65M15, 65M70 |
| url | https://arxiv.org/abs/2601.12246 |