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Horndeski Genesis: strong coupling and absence thereof

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arxiv 1810.00465 v1 pith:YWERQPTX submitted 2018-09-30 hep-th gr-qc

Y. A. Ageeva , O. A. Evseev , O. I. Melichev , V. A. Rubakov This is my paper · ORCID
classification hep-thgr-qc
keywords earlygenesisclassicalcouplinghorndeskistrongtheoryabsence
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We consider Genesis in the Horndeski theory as an alternative to or completion of the inflationary scenario. One of the options free of instabilities at all cosmological epochs is the one in which the early Genesis is naively plagued with strong coupling. We address this issue to see whether classical field theory description of the background evolution at this early stage is consistent, nevertheless. We argue that, indeed, despite the fact that the effective Plank mass tends to zero at early time asymptotics, the classical analysis is legitimate in a certain range of Lagrangian parameters.

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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. Fully viable DHOST bounce with extra scalar

    hep-th 2025-01 conditional novelty 6.0 of 10

    A constructed two-field DHOST bouncing cosmology that avoids ghost, gradient, and superluminality problems and produces nearly scale-invariant curvature perturbations.

  2. Non-Gaussianity and Strong-Coupling Problem in a Two-Field DHOST Bouncing Model

    hep-th 2026-06 unverdicted novelty 4.0 of 10

    Refines two-field DHOST bouncing model to match observed f_NL and keep strong-coupling scale above background energy, claiming full viability at linear and non-linear levels.

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