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Black hole singularity resolution in unimodular gravity from unitarity

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arxiv 2409.03006 v3 pith:IU6EERWP submitted 2024-09-04 hep-th gr-qc

Steffen Gielen , Lucía Menéndez-Pidal This is my paper
classification hep-thgr-qc
keywords singularityblackunimodularunitaritygravityholequantumregion
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We study the quantum dynamics of an interior planar AdS (anti-de Sitter) black hole, requiring unitarity in the natural time coordinate conjugate to the cosmological "constant of motion" appearing in unimodular gravity. Both the classical singularity and the horizon are replaced by a non-singular highly quantum region; semiclassical notions of spacetime evolution are only valid in an intermediate region. For the singularity, our results should be applicable to general black holes: unitarity in unimodular time always implies singularity resolution.

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  1. Inflation in unimodular loop quantum cosmology

    gr-qc 2026-07 conditional novelty 5.0 of 10

    In unimodular loop quantum cosmology, an α-attractor potential allows a potential-energy-dominated bounce at the Planck scale that is consistent with CMB observations and may show quantum-gravity imprints.

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