%0 Journal Article
%T Harrison-Zel'dovich primordial spectrum is consistent with observations
%A Pandolfi, S.
%A Cooray, A.
%A Giusarma, E.
%A Kolb, E. W.
%A Melchiorri, A.
%A Mena, O.
%A Serra, P.
%J Physical Review D
%D 2010
%V 81
%N 12
%I Amer Physical Soc
%@ 1550-7998
%G English
%F Pandolfi_etal2010
%O ISI:000278555900003
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=426), last updated on Tue, 22 Mar 2011 14:56:05 +0000
%X 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.
%R 10.1103/PhysRevD.81.123509
%U http://arxiv.org/abs/arXiv:1003.4763
%U https://doi.org/10.1103/PhysRevD.81.123509
%P 123509-6pp