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arXiv · 1812.11077

Hillclimbing inflation in metric and Palatini formulations

Ryusuke Jinno·Kunio Kaneta·Kin-ya Oda·Seong Chan Park
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Abstract

A new setup of cosmic inflation with a periodic inflaton potential and conformal factor is discussed in the metric and Palatini formulations of gravity. As a concrete example, we focus on a natural-inflation-like inflaton potential, and show that the inflationary predictions fall into the allowed region of cosmic microwave background observations in both formulations.

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Ryusuke Jinno, Kunio Kaneta, Kin-ya Oda, Seong Chan Park. 2019-03-14. Hillclimbing inflation in metric and Palatini formulations. https://doi.org/10.1016/j.physletb.2019.03.012

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