Error estimates of asymptotic-preserving neural networks in approximating stochastic linearized Boltzmann equation
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866916660264304640 |
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| author | Wan, Jiayu Liu, Liu |
| author_facet | Wan, Jiayu Liu, Liu |
| contents | In this paper, we construct an asymptotic-preserving neural networks (APNNs) [21] for the linearized Boltzmann equation in the acoustic scaling and with uncertain parameters. Utilizing the micro-macro decomposition, we design the loss function based on the stochastic-Galerkin system conducted from the micro-macro equations. Rigorous analysis is provided to show the capability of neural networks in approximating solutions near the global Maxwellian. By employing hypocoercivity techniques, we demonstrate two key results: the existence of APNNs when the loss function approaches zero, and the convergence of the APNN approximated solution as the loss tends to zero, with the error exhibiting an exponential decay in time. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_01643 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Error estimates of asymptotic-preserving neural networks in approximating stochastic linearized Boltzmann equation Wan, Jiayu Liu, Liu Numerical Analysis 35Q20, 68T07, 82C40, 65F99 In this paper, we construct an asymptotic-preserving neural networks (APNNs) [21] for the linearized Boltzmann equation in the acoustic scaling and with uncertain parameters. Utilizing the micro-macro decomposition, we design the loss function based on the stochastic-Galerkin system conducted from the micro-macro equations. Rigorous analysis is provided to show the capability of neural networks in approximating solutions near the global Maxwellian. By employing hypocoercivity techniques, we demonstrate two key results: the existence of APNNs when the loss function approaches zero, and the convergence of the APNN approximated solution as the loss tends to zero, with the error exhibiting an exponential decay in time. |
| title | Error estimates of asymptotic-preserving neural networks in approximating stochastic linearized Boltzmann equation |
| topic | Numerical Analysis 35Q20, 68T07, 82C40, 65F99 |
| url | https://arxiv.org/abs/2503.01643 |