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Generalization of cosmological attractor approach to Einstein-Gauss-Bonnet gravity

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arxiv 2005.10133 v2 pith:2GHTBWW4 submitted 2020-05-20 gr-qc astro-ph.CO

E.O. Pozdeeva This is my paper · ORCID
classification gr-qcastro-ph.CO
keywords attractorcosmologicalapproachapproximationeinstein-gauss-bonnetgravityinflationaryleading
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abstract

We construct models with the Gauss-Bonnet term multiplied to a function of the scalar field leading to inflationary scenario. The consideration is related with the slow-roll approximation. The cosmological attractor approach gives the spectral index of scalar perturbations which is in a good agreement with modern observation and allows variability for tensor-to-scalar ratio. We reconstruct models with variability of parameters which allow to reproduce cosmological attractor predictions for inflationary parameters in the leading order of $1/N$ approximation in the Einstein-Gauss-Bonnet gravity.

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Cited by 4 Pith papers

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

  1. Einstein--Gauss--Bonnet Inflationary Cosmology in Phase-$\theta$ Formalism

    gr-qc 2026-07 conditional novelty 5.0 of 10

    Phase-θ formalism maps EGB inflation backgrounds to closed-form observables beyond slow-roll; Starobinsky+linear-GB fits ACT DR6 ns and r while predicting a DECIGO-accessible GW plateau.

  2. Non-Standard Thermal History and Formation of Primordial Black Holes in Einstein-Gauss-Bonnet Gravity

    gr-qc 2025-01 conditional novelty 5.0 of 10

    A tuned Einstein-Gauss-Bonnet inflation model can create primordial black holes from asteroid-sized to tens of solar masses and secondary gravitational waves, with abundances that change dramatically in a stiff post-i...

  3. Constraining Quintessential Inflation with ACT: A Gauss-Bonnet Gateway

    astro-ph.CO 2026-04 unverdicted novelty 4.5 of 10

    Exponential and sech Gauss–Bonnet couplings restore ACT-compatible ns and r for quintessential inflation, while tanh fails for a structural sign reason; reheating remains BBN-safe.

  4. Slow-roll approximations in Einstein--Gauss--Bonnet gravity formulated in terms of e-folding numbers

    gr-qc 2024-11 conditional novelty 4.0 of 10

    For the exponential EGB model, the extended slow-roll approximation with V2=6U0(1-δ1)Q gives the same scalar field as the exact equations, while the standard approximation deviates after N≈5.

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