The DOI matches its Crossref record; 90 of the 90 references it cites were found in a registry or an index.
The trouble with H0
Open accessAbstract
We perform a comprehensive cosmological study of the H0 tension between the direct local measurement and the model-dependent value inferred from the Cosmic Microwave Background. With the recent measurement of H0 this tension has raised to more than 3 σ. We consider changes in the early time physics without modifying the late time cosmology. We also reconstruct the late time expansion history in a model independent way with minimal assumptions using distance measurements from Baryon Acoustic Oscillations and Type Ia Supernovae, finding that at z < 0.6 the recovered shape of the expansion history is less than 5% different than that of a standard ΛCDM model. These probes also provide a model insensitive constraint on the low-redshift standard ruler, measuring directly the combination rsh where H0 = h × 100 Mpc−1 km/s and rs is the sound horizon at radiation drag (the standard ruler), traditionally constrained by CMB observations. Thus rs and H0 provide absolute scales for distance measurements (anchors) at opposite ends of the observable Universe. We calibrate the cosmic distance ladder and obtain a model-independent determination of the standard ruler for acoustic scale,rs. The tension in H0 reflects a mismatch between our determination of rs and its standard, CMB-inferred value. Without including high-ℓ Planck CMB polarization data (i.e., only considering the ``recommended baseline" low-ℓ polarisation and temperature and the high ℓ temperature data), a modification of the early-time physics to include a component of dark radiation with an effective number of species around 0.4 would reconcile the CMB-inferred constraints, and the local H0 and standard ruler determinations. The inclusion of the ``preliminary" high-ℓ Planck CMB polarisation data disfavours this solution.
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Cites
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Cited by
Dark Matter as a Topological Vacuum Condensate
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Metadata
- Authors
- Bernal, J. L., Verde, L., & Riess, A. G.
- Venue
- Journal of Cosmology and Astroparticle Physics
- Publisher
- IOP Publishing
- Published
- 2016-10-01
- Volume
- 2016
- Issue
- 10
- Pages
- 019-019
- ISSN
- 1475-7508 (ISSN-L)
- 1475-7516
- OpenAlex
- W2498300276
- Cited by
- 733
- References
- 90
- FWCI
- 32.55
- Type
- journal article
- Language
- en
- Open access
- bronze
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