Natural cliff inflation
High Energy Physics - Phenomenology
2017-11-23 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
We propose a novel scenario of inflation, in which the inflaton is identified as the lightest mode of an angular field in a compactified fifth dimension. The periodic effective potential exhibits exponentially flat plateaus, so that a sub-Planckian field excursion without hilltop initial conditions is naturally realized. We can obtain consistent predictions with observations on the spectral index and the tensor-to-scalar ratio.
Keywords
Cite
@article{arxiv.1711.08270,
title = {Natural cliff inflation},
author = {Jinn-Ouk Gong and Chang Sub Shin},
journal= {arXiv preprint arXiv:1711.08270},
year = {2017}
}
Comments
5 pages, 2 figures