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arXiv · 2509.25141

Quasinormal spectra of higher dimensional regular black holes in theories with infinite curvature corrections

Juan Pablo Arbelaez
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Abstract

We investigate the quasinormal modes of massless scalar and electromagnetic test fields propagating on several families of higher-dimensional regular black holes arising in gravitational theories with an infinite tower of higher-curvature corrections to Einstein gravity. Using the Wentzel--Kramers--Brillouin (WKB) method supplemented by Pad\'e approximants, we compute the fundamental modes and derive compact analytic expressions in the eikonal regime. For all models considered, positive higher-curvature coupling reduces both the oscillation frequencies and damping rates relative to the corresponding singular general-relativistic limit. Since our analysis is restricted to test-field perturbations on fixed regular black-hole backgrounds, these results should be interpreted as geometric and phenomenological signatures of the background geometry rather than as gravitational perturbations of the full higher-curvature theory. Our results provide further insight into how quantum-gravity-inspired corrections and regularity conditions may affect black-hole ringdown signals.

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Juan Pablo Arbelaez. 2025-09-29. Quasinormal spectra of higher dimensional regular black holes in theories with infinite curvature corrections. https://doi.org/10.1088/1361-6382%2Fae849c

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