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arXiv · 2609.39944

Greybody factors of large Gauss-Bonnet d-dimensional black holes

Filipe Moura·João Rodrigues
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Abstract

We compute analytically greybody factors for d-dimensional large spherically symmetric black holes with Gauss-Bonnet corrections in the high frequency limit. Our calculations include both the eikonal limit, where the real part of the frequency of the scattered wave is much larger than the imaginary part, and the highly damped case,where the imaginary part of the frequency is much larger than the real part, addressing the emission of gravitons and test scalar fields, and yielding full transmission and reflection scattering coefficients. We consider tensorial, vectorial and scalar gravitational perturbations, obtaining the same result for the three cases in the highly damped limit, but not in the eikonal limit.

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Filipe Moura, João Rodrigues. 2026-09-30. Greybody factors of large Gauss-Bonnet d-dimensional black holes. https://arxiv.org/abs/2609.39944

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