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Reconstructing Horndeski models from the effective field theory of dark energy

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arxiv 1705.09290 v2 pith:ZA67QCOE submitted 2017-05-25 gr-qc astro-ph.COhep-th

Joe Kennedy , Lucas Lombriser , Andy Taylor This is my paper · ORCID
classification gr-qcastro-ph.COhep-th
keywords covarianthorndeskimodelstheoriescoefficientsconstraintsdarkeffective
verification ladder T0 review T1 audit T2 compute T3 formal
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Studying the effects of dark energy and modified gravity on cosmological scales has led to a great number of physical models being developed. The effective field theory (EFT) of cosmic acceleration allows an efficient exploration of this large model space, usually carried out on a phenomenological basis. However, constraints on such parametrized EFT coefficients cannot be trivially connected to fundamental covariant theories. In this paper we reconstruct the class of covariant Horndeski scalar-tensor theories that reproduce the same background dynamics and linear perturbations as a given EFT action. One can use this reconstruction to interpret constraints on parametrized EFT coefficients in terms of viable covariant Horndeski theories. We demonstrate this method with a number of well-known models and discuss a range of future applications.

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Cited by 3 Pith papers

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

  1. Curvature Perturbations in the Effective Field Theory of Inflation

    gr-qc 2019-08 conditional novelty 7.0 of 10

    In single-field inflation, conservation of the comoving curvature perturbation implies conservation of the unitary and synchronous curvatures, but not the reverse, with observable consequences in ultra-slow-roll and a...

  2. A Bright Future? Prospects for Cosmological Tests of GR with Multimessenger Gravitational Wave Events

    gr-qc 2025-01 conditional novelty 6.0 of 10

    Simulated bright siren events show LVK-era detections will not competitively constrain Horndeski gravity parameters, while one year of Einstein Telescope observations could detect αM ≠ 0 at over 3σ.

  3. Parametrizations for tests of gravity

    astro-ph.CO 2019-08 accept novelty 1.0 of 10

    A review of parametrized frameworks (PPF, EFT, PPN, ppE) for testing gravity across cosmological and astrophysical scales, with an outlook toward unification.

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