Spherically symmetric charged (anti-)de Sitter black hole in $f(R,T)$ gravity coupled with nonlinear electrodynamics
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866914170263306240 |
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| author | Ren, Tianyou Ban, Zhenglong Hua, Yaobin Yang, Rong-Jia |
| author_facet | Ren, Tianyou Ban, Zhenglong Hua, Yaobin Yang, Rong-Jia |
| contents | By deriving and solving the gravitational and electromagnetic field equations in $f(R,T)$ gravity coupled with nonlinear electrodynamics, we obtain a static spherically symmetric charged solution that incorporates higher-order correction terms along with an effective cosmological constant term. This solution reduces to the AdS/dS metric in the far-field region while exhibiting significant modifications in the strong-field regime due to the nonlinear electromagnetic effects and the matter-geometry coupling. We further analyze the black hole's horizon structure, revealing the complex phenomenon of multiple horizons emerging within specific parameter ranges. Additionally, by introducing an effective metric to study photon propagation, we systematically explore the influence of magnetic charge and the coupling parameter on the effective potential, the photon sphere radius, and the black hole shadow. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_20055 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spherically symmetric charged (anti-)de Sitter black hole in $f(R,T)$ gravity coupled with nonlinear electrodynamics Ren, Tianyou Ban, Zhenglong Hua, Yaobin Yang, Rong-Jia General Relativity and Quantum Cosmology High Energy Physics - Theory By deriving and solving the gravitational and electromagnetic field equations in $f(R,T)$ gravity coupled with nonlinear electrodynamics, we obtain a static spherically symmetric charged solution that incorporates higher-order correction terms along with an effective cosmological constant term. This solution reduces to the AdS/dS metric in the far-field region while exhibiting significant modifications in the strong-field regime due to the nonlinear electromagnetic effects and the matter-geometry coupling. We further analyze the black hole's horizon structure, revealing the complex phenomenon of multiple horizons emerging within specific parameter ranges. Additionally, by introducing an effective metric to study photon propagation, we systematically explore the influence of magnetic charge and the coupling parameter on the effective potential, the photon sphere radius, and the black hole shadow. |
| title | Spherically symmetric charged (anti-)de Sitter black hole in $f(R,T)$ gravity coupled with nonlinear electrodynamics |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2511.20055 |