Some remarks on singularities in quantum cosmology

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arxiv gr-qc/9605025 v2 pith:P6KEEBMN submitted 1996-05-13 gr-qc

Mark J. Gotay (University of Hawai`i) , Jacques Demaret (Universite de Liege) This is my paper

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keywords singularitiesclassicalcosmologicalcosmologydiscussextentmodelspersist

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We discuss to what extent classical singularities persist upon quantization in two simple cosmological models.

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Singularity Resolution of Quantum Black Holes in (A)dS
gr-qc 2025-08 conditional novelty 2.0 of 10

Requiring unitary evolution in unimodular time resolves the Schwarzschild-(A)dS singularity and yields a quantum-corrected metric with a minimum radius r_min marking a black hole to white hole transition.