%0 Journal Article
%T Running of featureful primordial power spectra
%A Gariazzo, S.
%A Mena, O.
%A Miralles, V.
%A Ramirez, H.
%A Boubekeur, L.
%J Physical Review D
%D 2017
%V 95
%N 12
%I Amer Physical Soc
%@ 2470-0010
%G English
%F Gariazzo_etal2017
%O WOS:000404475200004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3186), last updated on Thu, 13 Jul 2017 15:02:16 +0000
%X Current measurements of the temperature and polarization anisotropy power spectra of the cosmic microwave background (CMB) seem to indicate that the naive expectation for the slow-roll hierarchy within the most simple inflationary paradigm may not be respected in nature. We show that a primordial power spectrum with localized features could in principle give rise to the observed slow-roll anarchy when fitted to a featureless power spectrum. From a model comparison perspective, and assuming that nature has chosen a featureless primordial power spectrum, we find that, while with mock Planck data there is only weak evidence against a model with localized features, upcoming CMB missions may provide compelling evidence against such a nonstandard primordial power spectrum. This evidence could be reinforced if a featureless primordial power spectrum is independently confirmed from bispectrum and/or galaxy clustering measurements.
%R 10.1103/PhysRevD.95.123534
%U http://arxiv.org/abs/1701.08977
%U https://doi.org/10.1103/PhysRevD.95.123534
%P 123534-7pp