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When gravitational decoupling and quantum gravity (re)unite

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arxiv 2403.13099 v2 pith:WZR6NBRH submitted 2024-03-19 gr-qc hep-th

classification gr-qchep-th
keywords quantumcorrectionsdecouplingeffectivegravitationalgravityanisotropiccompact
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The effective action for quantum gravity coupled to matter contains corrections arising from the functional measure. We analyse the effect of such corrections for anisotropic self-gravitating compact objects described by means of the gravitational decoupling method applied to isotropic solutions of the Einstein field equations. In particular, we consider the Tolman IV solution of general relativity and show that quantum gravity effects can modify the effective energy density as well as the effective tangential and radial pressures. For a suitable choice of the mimicking constant, upper bounds on the quantum corrections can be driven by the surface redshift of the anisotropic compact stellar system obtained with the gravitational decoupling.

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  1. Cosmological phase transitions from the functional measure

    hep-ph 2025-02 conditional novelty 6.0 of 10

    In the minimal modified functional measure model, a logarithmic scalar-potential correction can make the electroweak transition strongly first order, and future gravitational-wave observatories could probe the Higgs t...

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