Reconstructing large running-index inflaton potentials
Astrophysics
2009-11-10 v2 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
Recent fits of cosmological parameters by the first year Wilkinson Microwave Anisotropy Probe (WMAP) measurement seem to favor a primordial scalar spectrum with a large varying index from blue to red. We use the inflationary flow equations to reconstruct large running-index inflaton potentials and comment on current status on the inflationary flow. We find previous negligence of higher order slow rolling contributions when using the flow equations would lead to unprecise results.
Keywords
Cite
@article{arxiv.astro-ph/0404419,
title = {Reconstructing large running-index inflaton potentials},
author = {Chiyi Chen and Bo Feng and Xiulian Wang and Zhaoyu Yang},
journal= {arXiv preprint arXiv:astro-ph/0404419},
year = {2009}
}
Comments
Final version to appear in Class. Quant. Grav. References added