Hillclimbing inflation in metric and Palatini formulations

Ryusuke Jinno; Kunio Kaneta; Kin ya Oda; Seong Chan Park

doi:10.1016/j.physletb.2019.03.012

Hillclimbing inflation in metric and Palatini formulations

Ryusuke Jinno, Kunio Kaneta, Kin ya Oda, Seong Chan Park

Department of Physics

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29 Citations (Scopus)

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.

Original language	English
Pages (from-to)	396-402
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	791
DOIs	https://doi.org/10.1016/j.physletb.2019.03.012
Publication status	Published - 2019 Apr 10

Bibliographical note

Publisher Copyright:
© 2019 The Author(s)

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.physletb.2019.03.012

Cite this

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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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AU - Oda, Kin ya

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AB - 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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ER -

Hillclimbing inflation in metric and Palatini formulations

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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