Hierarchical Axion Inflation
High Energy Physics - Theory
2014-12-31 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
Abstract
We propose a new field theory mechanism for generating an effective trans-Planckian decay constant from sub-Planckian ones. Using the minimal two axions and a hierarchy between two axion decay constants is sufficient for realizing inflation through non-perturbative effects only and with minimal tuning. The inflationary motion is kept entirely within a sub-Planckian domain. We outline possible strategies of embedding the model in a string theory setup.
Keywords
Cite
@article{arxiv.1404.7773,
title = {Hierarchical Axion Inflation},
author = {Ido Ben-Dayan and Francisco Gil Pedro and Alexander Westphal},
journal= {arXiv preprint arXiv:1404.7773},
year = {2014}
}
Comments
REVTeX, 5 pages, 2 figures, added refs, changed the numerical parameter values of the stringy example, removed ED1's from the superpotential