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Cosmological constant problem: deflation during inflation

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arxiv 1812.10526 v5 pith:5XOOSCLE submitted 2018-12-26 gr-qc hep-th

classification gr-qchep-th
keywords constantcosmologicaleffectiveagreementargueasymptoticattenuatedchecks
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We argue that the discrepancy between the Planck mass scale and the observed value of the cosmological constant can be largely attenuated if those quantities are understood as a result of effective, and thus scale-dependent, couplings. We exemplify this mechanism for the early inflationary epoch of the universe by solving the corresponding effective gap equations, subject to an energy condition. Several non-trivial checks and extensions are discussed. A comparison of our results to the renormalization group flow, obtained within the asymptotic safety program reveals a stunning agreement.

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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. Cosmological framework for renormalization group extended gravity at the action level

    gr-qc 2019-08 conditional novelty 6.0 of 10

    Renormalization group corrections to gravity are applied at the action level to cosmology, yielding a constant gravitational slip and a low-redshift f sigma8 modification that may ease the sigma8 tension.

  2. Minimal Geometric Deformation in a Reissner-Nordstr\"om background

    gr-qc 2019-09 conditional novelty 4.0 of 10

    New exact Reissner-Nordström black hole solutions are built via minimal geometric deformation with a linear equation of state in the added source.

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