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2018

Rescuing Quartic and Natural Inflation in the Palatini Formalism

Antoniadis, I., Karam, A., Lykkas, A. et al.

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When considered in the Palatini formalism, the Starobinsky model does not provide us with a mechanism for inflation due to the absence of a propagating scalar degree of freedom.

By (non)--minimally coupling scalar fields to the Starobinsky model in the Palatini formalism we can in principle describe the inflationary epoch.
In this article, we focus on the minimally coupled quartic and natural inflation models.
Both theories are excluded in their simplest realization since they predict values for the inflationary observables that are outside the limits set by the Planck data.

Rescuing Quartic and Natural Inflation in the Palatini Formalism · Around

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