Tuesday, October 30, 2012

1210.7305 (Yuichi Fukazawa et al.)

Radion Inflation in Higher-Dimensional Gravity Theory    [PDF]

Yuichi Fukazawa, Takeo Inami, Yoji Koyama
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.
View original: http://arxiv.org/abs/1210.7305

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