Constraining fast-roll inflation
Cosmology and Nongalactic Astrophysics
2012-09-12 v2 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We present constraints on how far single field inflation may depart from the familiar slow-roll paradigm. Considering a fast-roll regime while requiring a (near)-scale-invariant power spectrum introduces large self-interactions for the field and consequently large and scale-dependent non-Gaussianities. Employing this signal, we use the requirement of weak-coupling together with WMAP constraints to derive bounds on generic theories of single field inflation.
Keywords
Cite
@article{arxiv.1205.5796,
title = {Constraining fast-roll inflation},
author = {Johannes Noller},
journal= {arXiv preprint arXiv:1205.5796},
year = {2012}
}
Comments
Proceedings for Rencontres de Moriond, 2012, Cosmology ; v2: reference and minor clarification added, results/equations/conclusions unchanged