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Static Planck stars from effective loop quantum gravity

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arxiv 2408.16533 v2 pith:TUGXSHYI submitted 2024-08-29 gr-qc

classification gr-qc
keywords effectiveloopquantumdynamicsequationgravitymassmatter
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Effective loop quantum gravity dynamics are derived for spherically symmetric spacetimes with a perfect fluid matter content. For homogeneous spacetimes, the effective dynamics agree with the standard results of loop quantum cosmology, while the equations for static solutions give an effective Tolman-Oppenheimer-Volkoff equation. There exist solutions to the effective Tolman-Oppenheimer-Volkoff equation that have a mass of the order of the Planck mass, a Planckian radius, and no horizon; these miniature stars could potentially contribute to dark matter, and could be an end state for an evaporating black hole.

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  1. Non-uniqueness of the shockwave dynamics in effective loop quantum gravity

    gr-qc 2025-02 conditional novelty 6.0 of 10

    In effective loop quantum gravity, an infinite family of mathematically equivalent collapse equations produce different weak solutions after shell crossing, so the predicted black hole lifetime (e.g., M^2, M^3, M^4) i...

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