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arXiv · 1210.7305

Radion Inflation in Higher-Dimensional Gravity Theory

Yuichi Fukazawa·Takeo Inami·Yoji Koyama
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Abstract

We study a radion model for inflation and density perturbation identifying the scalar field arising from the five-dimensional gravity on $M_4 x S^1$ with the inflaton. The inflaton potential arising from 5D graviton and matter one-loop effects is shown to possess the desirable slow-roll property. This radion model contains only a small number of parameters and there is an ample parameter region which reproduces (without fine-tuning) all precision astrophysical data.

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Yuichi Fukazawa, Takeo Inami, Yoji Koyama. 2012-10-27. Radion Inflation in Higher-Dimensional Gravity Theory. https://doi.org/10.1093/ptep/pts088

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