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Covariant LTB collapse in models of loop quantum gravity

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arxiv 2412.18054 v2 pith:4J3OYKYN submitted 2024-12-24 gr-qc

classification gr-qc
keywords gravitycollapsemodelsquantumcovariantgenericloopmodifications
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Models of gravitational collapse provide important means to test whether non-classical space-time effects motivated for instance by quantum gravity can be realized in generic ways in physically relevant situations. Here, a detailed analysis of marginally bound Lemaitre-Tolman-Bondi space-times is given in emergent modified gravity, which in particular includes a covariant formulation of holonomy modifications usually considered in models of loop quantum gravity. As a result, generic collapse in this setting is shown to imply a physical singularity that removes the bouncing behavior seen in vacuum space-times with the same type of modifications.

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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. Asymmetric Quantum Oppenheimer-Snyder Collapse

    gr-qc 2026-08 conditional novelty 6.0 of 10

    Asymmetric loop-quantum-cosmology collapse of a dust ball yields a geodesically complete, bouncing regular black hole spacetime with a C^0 shock at the dust surface and two joined vacuum geometries.

  2. Emergent field theory

    gr-qc 2025-07 conditional novelty 5.0 of 10

    Spacetime geometry and Yang-Mills field strengths are generated from phase-space structure functions, yielding modified gravity and gauge theories with no new degrees of freedom.

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