Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/118327
Title: | Red, straight, no bends: primordial power spectrum reconstruction from CMB and large-scale structure |
Author: | Ravenni, Andrea Verde, Licia Cuesta, Antonio J. |
Keywords: | Cosmologia Cosmology |
Issue Date: | 12-Aug-2016 |
Publisher: | Institute of Physics (IOP) |
Abstract: | We present a minimally parametric, model independent reconstruction of the shape of the primordial power spectrum. Our smoothing spline technique is well-suited to search for smooth features such as deviations from scale invariance, and deviations from a power law such as running of the spectral index or small-scale power suppression. We use a comprehensive set of the state-of the art cosmological data: Planck observations of the temperature and polarisation anisotropies of the cosmic microwave background, WiggleZ and Sloan Digital Sky Survey Data Release 7 galaxy power spectra and the Canada-France-Hawaii Lensing Survey correlation function. This reconstruction strongly supports the evidence for a power law primordial power spectrum with a red tilt and disfavours deviations from a power law power spectrum including small-scale power suppression such as that induced by significantly massive neutrinos. This offers a powerful confirmation of the inflationary paradigm, justifying the adoption of the inflationary prior in cosmological analyses. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1088/1475-7516/2016/08/028 |
It is part of: | Journal of Cosmology and Astroparticle Physics, 2016, vol. 2016, num. 8, p. 1-18 |
URI: | http://hdl.handle.net/2445/118327 |
Related resource: | https://doi.org/10.1088/1475-7516/2016/08/028 |
ISSN: | 1475-7516 |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Publicacions de projectes de recerca finançats per la UE |
Files in This Item:
File | Description | Size | Format | |
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662425.pdf | 6.42 MB | Adobe PDF | View/Open |
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