TY  - JOUR
AU  - Pandolfi, S.
AU  - Cooray, A.
AU  - Giusarma, E.
AU  - Kolb, E. W.
AU  - Melchiorri, A.
AU  - Mena, O.
AU  - Serra, P.
PY  - 2010
DA  - 2010//
TI  - Harrison-Zel'dovich primordial spectrum is consistent with observations
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 123509
EP  - 6pp
VL  - 81
IS  - 12
PB  - Amer Physical Soc
AB  - 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.
SN  - 1550-7998
UR  - http://arxiv.org/abs/arXiv:1003.4763
UR  - https://doi.org/10.1103/PhysRevD.81.123509
DO  - 10.1103/PhysRevD.81.123509
LA  - English
N1  - ISI:000278555900003
ID  - Pandolfi_etal2010
ER  -