Three-dimensional time-periodic problem on the Boltzmann equation with external force
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866913075069714432 |
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| author | Duan, Renjun Ni, Jinkai |
| author_facet | Duan, Renjun Ni, Jinkai |
| contents | The time-periodic problem on the Boltzmann equation with a given time-periodic external force in the three-dimensional whole space has remained open since it was first studied in [15] for only spatial dimensions not less than five. The goal of this paper is to give an affirmative answer to this problem provided that the external force is sufficiently small in the function space $\mathcal{C}(\mathbb{R};\dot{B}^{-3/2}_{2,\infty}\cap\dot{H}^N)$ with $N\geq 4$. The proof is based on Serrin's method through studying the global-in-time stability of the Cauchy problem with time-periodic external forces. As a direct consequence, the result also yields the existence and stability of stationary solutions to the physically realistic three-dimensional Boltzmann equation when the external force is time-independent. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2604_21339 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Three-dimensional time-periodic problem on the Boltzmann equation with external force Duan, Renjun Ni, Jinkai Analysis of PDEs Mathematical Physics The time-periodic problem on the Boltzmann equation with a given time-periodic external force in the three-dimensional whole space has remained open since it was first studied in [15] for only spatial dimensions not less than five. The goal of this paper is to give an affirmative answer to this problem provided that the external force is sufficiently small in the function space $\mathcal{C}(\mathbb{R};\dot{B}^{-3/2}_{2,\infty}\cap\dot{H}^N)$ with $N\geq 4$. The proof is based on Serrin's method through studying the global-in-time stability of the Cauchy problem with time-periodic external forces. As a direct consequence, the result also yields the existence and stability of stationary solutions to the physically realistic three-dimensional Boltzmann equation when the external force is time-independent. |
| title | Three-dimensional time-periodic problem on the Boltzmann equation with external force |
| topic | Analysis of PDEs Mathematical Physics |
| url | https://arxiv.org/abs/2604.21339 |