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Nonminimal coupling and inflationary attractors

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arxiv 1608.05922 v2 pith:W6Y7TXIP submitted 2016-08-21 gr-qc astro-ph.COhep-th

Zhu Yi , Yungui Gong This is my paper · ORCID
classification gr-qcastro-ph.COhep-th
keywords attractorscouplingmodelarbitraryarguechallengeconformaldifferent
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abstract

We show explicitly how the T model, E model, and Hilltop inflations are obtained from the general scalar-tensor theory of gravity with arbitrary conformal factors in the strong coupling limit. We argue that $\xi$ attractors can give any observables $n_s$ and $r$ by this method. The existence of attractors imposes a challenge to distinguish different models.

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Cited by 1 Pith paper

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  1. Observational constraints on inflationary models with non-minimally derivative coupling by ACT

    gr-qc 2025-06 conditional novelty 5.0 of 10

    Inflationary potentials with non-minimally derivative coupling can produce larger scalar spectral tilts and lower tensor-to-scalar ratios, allowing them to fit ACT data, though the exponential attractor constraints co...

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