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Physical running of couplings in quadratic gravity

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arxiv 2403.02397 v2 pith:55CXZ7EG submitted 2024-03-04 hep-th gr-qchep-ph

Diego Buccio , John F. Donoghue , Gabriel Menezes , Roberto Percacci This is my paper · ORCID
classification hep-thgr-qchep-ph
keywords physicalbetafunctionsgravityquadraticabsenceamplitudesargue
verification ladder T0 review T1 audit T2 compute T3 formal
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We argue that the well-known beta functions of quadratic gravity do not correspond to the physical dependence of scattering amplitudes on external momenta, and derive the correct physical beta functions. Asymptotic freedom turns out to be compatible with the absence of tachyons.

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Cited by 5 Pith papers

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

  1. De Sitter quantum gravity within the covariant Lorentzian approach to asymptotic safety

    hep-th 2025-02 conditional novelty 7.0 of 10

    In the Einstein-Hilbert truncation on de Sitter, the Lorentzian FRG flow exhibits a non-Gaussian UV fixed point for ζ=1/2 and ζ=1 gauges over restricted parameter ranges.

  2. Lorentz violating quadratic gravity

    hep-th 2026-03 reject novelty 6.0 of 10

    Bumblebee–quadratic gravity needs new Lorentz-violating counterterms at one loop, but the displayed computation has a gauge-parameter inconsistency and the classical Schwarzschild/de Sitter solutions are the robust part.

  3. Impact of quantum gravity on the UV sensitivity of extremal black holes

    hep-th 2025-09 reject novelty 6.0 of 10

    Asymptotically safe quantum gravity predicts a positive Goroff-Sagnotti Wilson coefficient at the Planck scale, which would keep extremal Kerr black hole tidal forces finite, but the paper's bound on the quantum gravi...

  4. Standard Running, "Physical Running", Cosmological Constant and Newton Coupling

    hep-th 2025-05 conditional novelty 5.0 of 10

    Standard beta functions remain valid with a proper scale choice, and vacuum energy plus Newton coupling can run in curved spacetime.

  5. Remarks on ghost resonances

    hep-th 2025-01 conditional novelty 5.0 of 10

    For a ghost field above the multiparticle threshold, the dressed propagator carries a complex conjugate pole pair in the first Riemann sheet, and the paper derives spectral representations for both sheets while flaggi...

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