Extranatural Inflation
High Energy Physics - Theory
2009-09-15 v2 Astrophysics
High Energy Physics - Phenomenology
Abstract
We present a new model of inflation in which the inflaton is the extra component of a gauge field in a 5d theory compactified on a circle. The chief merit of this model is that the potential comes only from non-local effects so that its flatness is not spoiled by higher dimensional operators or quantum gravity corrections. The model predicts a red spectrum (n ~ 0.96) and a significant production of gravitational waves (r ~ 0.11). We also comment on the relevance of this idea to quintessence.
Cite
@article{arxiv.hep-th/0301218,
title = {Extranatural Inflation},
author = {Nima Arkani-Hamed and Hsin-Chia Cheng and Paolo Creminelli and Lisa Randall},
journal= {arXiv preprint arXiv:hep-th/0301218},
year = {2009}
}
Comments
4 pages. Minor corrections and references added. Accepted for PRL