Harrison-Z'eldovich primordial spectrum is consistent with observations
Cosmology and Nongalactic Astrophysics
2010-10-28 v2 High Energy Astrophysical Phenomena
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
Inflation predicts primordial scalar perturbations with a nearly scale-invariant spectrum and a spectral index approximately unity (the Harrison--Zel'dovich (HZ) spectrum). The first important step for inflationary cosmology is to check the consistency of the HZ primordial spectrum with current observations. Recent analyses have claimed that a HZ primordial spectrum is excluded at more than 99% c.l.. Here we show that the HZ spectrum is only marginally disfavored if one considers a more general reionization scenario. Data from the Planck mission will settle the issue.
Keywords
Cite
@article{arxiv.1003.4763,
title = {Harrison-Z'eldovich primordial spectrum is consistent with observations},
author = {S. Pandolfi and A. Cooray and E. Giusarma and E. W. Kolb and A. Melchiorri and O. Mena and P. Serra},
journal= {arXiv preprint arXiv:1003.4763},
year = {2010}
}
Comments
4 Pages, 2 Figures