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We study non-minimal Coleman-Weinberg inflation in the Palatini formulation of gravity in the presence of an R² term. The Planck scale is dynamically generated by the vacuum expectation value of the inflaton via its non-minimal coupling to the curvature scalar R. We show that the addition of the R² term in Palatini gravity makes non-minimal Coleman-Weinberg inflation again compatible with observational data.
Gialamas et al. (Mon,) studied this question.
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