TY  - JOUR
AU  - Gariazzo, S.
AU  - Mena, O.
AU  - Miralles, V.
AU  - Ramirez, H.
AU  - Boubekeur, L.
PY  - 2017
DA  - 2017//
TI  - Running of featureful primordial power spectra
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 123534
EP  - 7pp
VL  - 95
IS  - 12
PB  - Amer Physical Soc
AB  - 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.
SN  - 2470-0010
UR  - http://arxiv.org/abs/1701.08977
UR  - https://doi.org/10.1103/PhysRevD.95.123534
DO  - 10.1103/PhysRevD.95.123534
LA  - English
N1  - WOS:000404475200004
ID  - Gariazzo_etal2017
ER  -