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Quantum gravity -- an unfinished revolution

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arxiv 2302.13047 v1 pith:FKIX7ZVV submitted 2023-02-25 gr-qc hep-thphysics.hist-ph

classification gr-qchep-thphysics.hist-ph
keywords gravityproblemsquantumsearchapproachesassumedconsistentfundamental
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It is generally assumed that the search for a consistent and testable theory of quantum gravity is among the most important open problems of fundamental physics. I review the motivations for this search, the main problems on the way, and the status of present approaches and their physical relevance. I speculate on what the situation could be in 2050.

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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. Diffusion Minimization via Optimal Smearing in Collapse and Hybrid Classical-Quantum Gravitational Models

    quant-ph 2025-11 conditional novelty 7.0 of 10

    The Principle of Minimal Heating fixes the otherwise-arbitrary smearing profile: Gaussian for GRW, a quartic-then-cutoff profile for CSL, and a parabola-then-cutoff profile for Diósi–Penrose and Tilloy–Diósi models.

  2. Constructing regular black holes from multi-polytropic equations of state

    gr-qc 2025-02 reject novelty 5.0 of 10

    Two regular black hole metrics are derived from anisotropic multi-polytropic TOV equations; one reduces to the known Hayward geometry and the other is new, with repulsive-gravity regions outside the horizon for partic...

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