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Dimension and Dimensional Reduction in Quantum Gravity

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arxiv 1705.05417 v2 pith:RMFWXVUP submitted 2017-05-15 gr-qc hep-th

classification gr-qchep-th
keywords dimensionaldimensiongravityquantumreductionveryapproachesbecomes
verification ladder T0 review T1 audit T2 compute T3 formal

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A number of very different approaches to quantum gravity contain a common thread, a hint that spacetime at very short distances becomes effectively two dimensional. I review this evidence, starting with a discussion of the physical meaning of "dimension" and concluding with some speculative ideas of what dimensional reduction might mean for physics.

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Cited by 3 Pith papers

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

  1. Entanglement Entropy of Quantum Corners

    hep-th 2025-07 conditional novelty 6.0 of 10

    For a two-dimensional corner symmetry algebra, coherent corner states give an entanglement entropy that scales with the area when mapped to near-extremal Reissner-Nordström black holes.

  2. Hawking area law in quantum gravity

    gr-qc 2026-04 unverdicted novelty 5.0 of 10

    If Hawking's area law is taken as exact, nonlocal and Stelle quantum-gravity theories are forced to drop R^2 and (Riemann)^2 terms (or use singular Ricci-flat black holes), and the standard entropy-area law follows as...

  3. The Case For Black Hole Remnants: A Review

    gr-qc 2024-11 unverdicted novelty 2.0 of 10

    A review arguing that black hole remnants remain viable and that the species and entropy objections to them are not decisive, so remnants could resolve the information paradox.

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