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Absorption by black hole remnants in metric-affine gravity

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arxiv 1906.06411 v1 pith:AWBJQIIY submitted 2019-06-14 gr-qc astro-ph.HE

Adria Delhom , Caio F. B. Macedo , Gonzalo J. Olmo , Luis C. B. Crispino This is my paper · ORCID
classification gr-qcastro-ph.HE
keywords absorptionblackgravitymetric-affinesolutionsariseassociatedborn-infeld
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Using numerical methods, we investigate the absorption properties of a family of nonsingular solutions {which arise in different metric-affine theories, such as quadratic and Born-Infeld gravity.} These solutions continuously interpolate between Schwarzschild black holes and naked solitons with wormhole topology. The resulting spectrum is characterized by a series of quasibound states excitations, associated with the existence of a stable photonsphere.

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  1. Absorption spectrum and greybody factors of charged black holes in loop quantum gravity

    gr-qc 2026-08 conditional novelty 6.0 of 10

    The absorption cross section of massless scalar waves by a charged loop-quantum-gravity black hole increases with the quantum parameter in an intermediate frequency band, decreases with charge, and matches classical a...

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