Hillclimbing inflation in metric and Palatini formulations

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 re...

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Bibliographic Details
Main Authors: Ryusuke Jinno, Kunio Kaneta, Kin-ya Oda, Seong Chan Park
Format: Article
Language:English
Published: Elsevier 2019-04-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269319301662