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Observational properties of Coherent Quantum Black Holes

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arxiv 2406.04813 v1 pith:FWSK62F3 submitted 2024-06-07 gr-qc astro-ph.HE

classification gr-qcastro-ph.HE
keywords cqbhquantumaroundblackcoherentschwarzschildthemaccretion
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abstract

We consider null and time-like geodesics around a spherically symmetric, non-rotating Coherent Quantum Black Hole (CQBH). The classical limit of the geometry of CQBH departs from that of the Schwarzschild spacetime at short scales and depends on one parameter $R_s$ which can be interpreted as the physical radius of the 'quantum' core. We study circular orbits, photon rings, and lensing effects and compare them with the Schwarzschild metric. Using the relativistic ray-tracing code GYOTO, we produce a simulation of the shadow and show that thin accretion disks around a CQBH possess unique ring structures that distinguish them from other theoretical models.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Coherent quantum hairy black holes from gravitational decoupling: regularity, geodesics, and scalar ringdown

    hep-th 2026-02 conditional novelty 6.0 of 10

    Gaussian-smearing the gravitational-decoupling hairy black hole produces a regular core and modified photon rings, lensing, and a claimed but absent ringdown spectrum.

  2. Observational properties of regular black holes in Asymptotic Safety

    gr-qc 2025-04 conditional novelty 5.0 of 10

    As the asymptotic-safety parameter ξ grows, the shadow shrinks, the innermost orbit moves inward, and the accretion disk becomes brighter and more efficient than in Schwarzschild.

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