Radion Inflation in Higher-Dimensional Gravity Theory

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.

6 pages, 3 eps figures

References in corpus (3)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results
• Warped Radion Inflation
• Inflaton versus Curvaton in Higher Dimensional Gauge Theories

Cited by in corpus (4)

• Dynamical Foundations of the Brane Induced Gravity
• Implications for the hierarchy problem, inflation and geodesic motion from fiber fabric of spacetime
• Inflation from radion gauge-Higgs potential at Planck scale
• Radion stabilization in the presence of Wilson line phase