Reconciling Planck with the local value of H0 in extended parameter space

By E. di Valentino, A. Melchiorri, J. Silk. 2016

341 citations recorded by the source corpus.

The recent determination of the local value of the Hubble constant by Riess et al., 2016 (hereafter R16) is now 3.3 sigma higher than the value derived from the most recent CMB anisotropy data provided by the Planck satellite in a CDM model. Here we perform a combined analysis of the Planck and R16 results in an extended parameter space, varying simultaneously 12 cosmological parameters instead of the usual 6. We find that a phantom-like dark energy component, with effective equation of state w = −1.29 +0.15 −0.12 at 68% c.l. can solve the current tension between the Planck dataset and the R16 prior in an extended CDM scenario. On the other hand, the neutrino effective number is fully compatible with standard expectations. This result is confirmed when including cosmic shear data from the CFHTLenS survey and CMB lensing constraints from Planck. However, when BAO measurements are included we find that some of the tension with R16 remains, as also is the case when we include the supernova type Ia luminosity distances from the JLA catalog.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/2773ce24f8bbf9506eaf4007de8b623e9a25dc88

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Citations in the corpus

Sounds Discordant: Classical Distance Ladder and ΛCDM-based Determinations of the Cosmological Sound Horizon (2018, background): “On the other hand, Di Valentino et al. (2016, 2017) and Joudaki et al. (2017) used an extended parameter space and pointed out that an interacting phantom-like dark energy with an equation of state wDE<−1 can also reduce the tension in H0 measurements.”
Interacting scenarios with dynamical dark energy: Observational constraints and alleviation of the H0 tension (2019, background): “Finally, interacting scenarios prove to be efficient in alleviating the two known tensions of modern cosmology, namely the H0 one [67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95], and the σ8 one [90, 96, 97, 98].”
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Global constraints on absolute neutrino masses and their ordering (2017, background): “Clearly, current cosmological constraints on neutrino masses depend on the combination of datasets considered and on the theoretical framework assumed (see, for example, [80–85]).”
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Cosmology Intertwined II: The Hubble Constant Tension (2020, neutral): “[43] E.”
KiDS-450: testing extensions to the standard cosmological model (2016, methodology): “…using other data combinations, see e.g. Daniel et al. 2010; MNRAS 471, 1259–1279 (2017) Downloaded from https://academic.oup.com/mnras/article-abstract/471/2/1259/3760291 by Bibliotheek Rechten user on 10 January 2018 Di Valentino et al. 2016a; Johnson et al. 2016; Planck Collaboration XIV 2016c).”