A universal attractor for inflation at strong coupling
High Energy Physics - Theory
2015-06-17 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We introduce a novel non-minimal coupling between gravity and the inflaton sector. Remarkably, for large values of this coupling all models asymptote to a universal attractor. This behavior is independent of the original scalar potential and generalizes the attractor in the phi^4 theory with non-minimal coupling to gravity. The attractor is located in the `sweet spot' of Planck's recent results.
Cite
@article{arxiv.1310.3950,
title = {A universal attractor for inflation at strong coupling},
author = {Renata Kallosh and Andrei Linde and Diederik Roest},
journal= {arXiv preprint arXiv:1310.3950},
year = {2015}
}
Comments
5 pages, 4 figures. v2: discussion on unitarity and extra refs added, extended version of PRL paper