Relativistic resistive magnetohydrodynamics for a two-component plasma
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915812790501376 |
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| author | Kushwah, Khwahish de Brito, Caio V. P. Denicol, Gabriel S |
| author_facet | Kushwah, Khwahish de Brito, Caio V. P. Denicol, Gabriel S |
| contents | We derive relativistic resistive magnetohydrodynamics for a two-component ultrarelativistic plasma directly from kinetic theory. Starting with the Boltzmann--Vlasov equation and using the 14-moment approximation in the Landau frame, we obtain coupled evolution equations for the charge diffusion four-current and the shear-stress tensor. Benchmarking against the usual Israel-Stewart type relaxation form shows that this simplified description is accurate for small viscosity to entropy ($η/s$) ratio, vanishing magnetic field, and not so strong electric field. Outside this regime the dynamics depart in a controlled way, i.e., strong electric fields introduce nonlinear back-reaction that delays and reduces current peaks, and a sizable shear-stress is produced even without a flow profile. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_14787 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Relativistic resistive magnetohydrodynamics for a two-component plasma Kushwah, Khwahish de Brito, Caio V. P. Denicol, Gabriel S Plasma Physics High Energy Physics - Theory We derive relativistic resistive magnetohydrodynamics for a two-component ultrarelativistic plasma directly from kinetic theory. Starting with the Boltzmann--Vlasov equation and using the 14-moment approximation in the Landau frame, we obtain coupled evolution equations for the charge diffusion four-current and the shear-stress tensor. Benchmarking against the usual Israel-Stewart type relaxation form shows that this simplified description is accurate for small viscosity to entropy ($η/s$) ratio, vanishing magnetic field, and not so strong electric field. Outside this regime the dynamics depart in a controlled way, i.e., strong electric fields introduce nonlinear back-reaction that delays and reduces current peaks, and a sizable shear-stress is produced even without a flow profile. |
| title | Relativistic resistive magnetohydrodynamics for a two-component plasma |
| topic | Plasma Physics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2511.14787 |