Hillclimbing inflation in metric and Palatini formulations
arXiv:1812.11077 · doi:10.1016/j.physletb.2019.03.012
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.
8 pages, 9 figures