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Planck constraints on neutrino isocurvature density perturbations
Eleonora Di Valentino, Alessandro Melchiorri
The recent Cosmic Microwave Background data from the Planck satellite experiment, when combined with HST determinations of the Hubble constant, are compatible with a larger, non-st…
Axion cold dark matter: status after Planck and BICEP2
E. Di Valentino, E. Giusarma, M. Lattanzi +2
We investigate the axion dark matter scenario (ADM), in which axions account for all of the dark matter in the Universe, in light of the most recent cosmological data. In particula…
Probing nuclear rates with Planck and BICEP2
Eleonora Di Valentino, Carlo Gustavino, Julien Lesgourgues +4
Big Bang Nucleosynthesis (BBN) relates key cosmological parameters to the primordial abundance of light elements. In this paper, we point out that the recent observations of Cosmic…
Blue Gravity Waves from BICEP2 ?
Martina Gerbino, Andrea Marchini, Luca Pagano +3
We present new constraints on the spectral index n_T of tensor fluctuations from the recent data obtained by the BICEP2 experiment. We found that the BICEP2 data alone slightly pre…
Relic Neutrinos, thermal axions and cosmology in early 2014
Elena Giusarma, Eleonora Di Valentino, Massimiliano Lattanzi +2
We present up to date cosmological bounds on the sum of active neutrino masses as well as on extended cosmological scenarios with additional thermal relics, as thermal axions or st…