Observational constraint on the fourth derivative of the inflaton potential
High Energy Physics - Phenomenology
2009-11-07 v1 Astrophysics
Abstract
We consider the flow-equations for the 3 slow-roll parameters n_S (scalar spectral index), r (tensor to scalar ratio), and dn_S/dlnk (running of the spectral index). We show that the combination of these flow-equations with the observational bounds from cosmic microwave background and large scale structure allows one to put a lower bound on the fourth derivative of the inflationary potential, M_P^4(V''''/V) > -0.02.
Keywords
Cite
@article{arxiv.hep-ph/0210095,
title = {Observational constraint on the fourth derivative of the inflaton potential},
author = {C. Caprini and S. H. Hansen and M. Kunz},
journal= {arXiv preprint arXiv:hep-ph/0210095},
year = {2009}
}
Comments
3 pages, 3 figures