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arXiv · 2605.11364

Bardeen spacetime as quantum corrected black hole: Grey-body factors and quasinormal modes of gravitational perturbations

Bekir Can Lütfüoğlu·Javlon Rayimbaev·Sardor Murodov·Jakhongir Kurbanov·Muhammad Matyoqubov
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Abstract

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--Pad\'e 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.

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Bekir Can Lütfüoğlu, Javlon Rayimbaev, Sardor Murodov, Jakhongir Kurbanov, Muhammad Matyoqubov. 2026-05-12. Bardeen spacetime as quantum corrected black hole: Grey-body factors and quasinormal modes of gravitational perturbations. https://arxiv.org/abs/2605.11364

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