Bardeen spacetime as quantum corrected black hole: Grey-body factors and quasinormal modes of gravitational perturbations
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866914556679290880 |
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| author | Lütfüoğlu, Bekir Can Rayimbaev, Javlon Murodov, Sardor Kurbanov, Jakhongir Matyoqubov, Muhammad |
| author_facet | Lütfüoğlu, Bekir Can Rayimbaev, Javlon Murodov, Sardor Kurbanov, Jakhongir Matyoqubov, Muhammad |
| contents | We study axial gravitational perturbations of the asymptotically flat Bardeen spacetime interpreted as a string-T-duality-inspired quantum-corrected Schwarzschild black hole. Starting from the anisotropic-fluid background, we derive the Regge--Wheeler-type master equation and the corresponding effective potential, and compute quasinormal modes with high-order WKB--Padé and time-domain methods. We show that increasing the quantum-correction scale $\ell_0$ raises and shifts the barrier inward, causing the black hole to ring at higher frequencies and decay more slowly. The same deformation suppresses low-frequency transmission, shifts the onset of grey-body factors to larger frequencies, and reorganizes the partial and total absorption cross-sections. Overall, the results identify a clear and consistent imprint of short-distance regularization on both ringdown and scattering observables. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2605_11364 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Bardeen spacetime as quantum corrected black hole: Grey-body factors and quasinormal modes of gravitational perturbations Lütfüoğlu, Bekir Can Rayimbaev, Javlon Murodov, Sardor Kurbanov, Jakhongir Matyoqubov, Muhammad General Relativity and Quantum Cosmology We study axial gravitational perturbations of the asymptotically flat Bardeen spacetime interpreted as a string-T-duality-inspired quantum-corrected Schwarzschild black hole. Starting from the anisotropic-fluid background, we derive the Regge--Wheeler-type master equation and the corresponding effective potential, and compute quasinormal modes with high-order WKB--Padé and time-domain methods. We show that increasing the quantum-correction scale $\ell_0$ raises and shifts the barrier inward, causing the black hole to ring at higher frequencies and decay more slowly. The same deformation suppresses low-frequency transmission, shifts the onset of grey-body factors to larger frequencies, and reorganizes the partial and total absorption cross-sections. Overall, the results identify a clear and consistent imprint of short-distance regularization on both ringdown and scattering observables. |
| title | Bardeen spacetime as quantum corrected black hole: Grey-body factors and quasinormal modes of gravitational perturbations |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2605.11364 |