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1,831 claims from 1,127 papers are on the record. 46 have been checked so far; the other 1,785 have no check with a result yet.

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Status: Unchecked ×Keyword: cosmic chronometers ×Clear all

4 claims from 3 papers

1. Physics and Astronomy › Cosmology and Gravitation Theories

   An overview of what current data can (and cannot yet) say about evolving dark energy

   Giarè, Mahassen, Di Valentino and Pan · Physics of the Dark Universe · 2025

   A review tests how robust the preference for evolving dark energy is, using over 35 combinations of CMB, supernova, BAO and cosmic chronometer data with the CPL parametrization.

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   1. UncheckedSome dataset combinations without DESI-BAO data, pairing SDSS-BAO with Union3 or DESY5 supernovae, also favour evolving dark energy.“However, intriguing hints supporting DDE emerge in combinations that do not include DESI-BAO measurements: SDSS-BAO combined with SN from Union3 and DESY5 (with and without CMB) support the preference for DDE.”

2. Physics and Astronomy › Cosmology and Gravitation Theories

   Model-independent cosmological inference after the DESI DR2 data with improved inverse distance ladder

   Ling, Du, Li, Zhang, Wang and Zhang · Physical review. D/Physical review. D. · 2025

   Using an improved inverse distance ladder with a cosmic-age parametrization (PAge), the paper infers the Hubble constant and tests deviations from ΛCDM using DESI DR2 BAO, cosmic chronometers and supernova data.

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   1. UncheckedCombining DESY5 supernovae, DESI DR2 BAO and cosmic chronometers, the paper obtains a Hubble constant of 67.91 ± 2.33 km/s/Mpc.“For the DESY5+DESI DR2+CC datasets, we obtain $H_0 = 67.91 \pm 2.33~\mathrm{km~s^{-1}~Mpc^{-1}}$.”
   2. UncheckedCombining DESY5, DESI DR2 and cosmic chronometer data, the paper reports nearly decisive evidence for the PAge model over standard ΛCDM.“Finally, DESY5+DESI DR2+CC datasets provide nearly decisive evidence favoring the PAge model over the standard $Λ\mathrm{CDM}$ model.”

3. Physics and Astronomy › Cosmology and Gravitation Theories

   Late-time cosmological constraints on three holographic dark energy models with DESI DR2 BAO and Type Ia supernovae

   Huang, Liu and Shao · The European Physical Journal C · 2026

   The authors fit three holographic-inspired dark energy models to cosmic chronometer, supernova, DESI DR2 BAO and growth data, and found none significantly eases the Hubble tension.

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   1. UncheckedWith BAO data included, the holographic dark energy model fits H0 of about 67.3 to 68.0 and a matter density near 0.27, close to a de Sitter-like expansion.“In the BAO-included combinations, HDE gives $H_0\simeq67.3$--$68.0~\mathrm{~km~s^{-1}~Mpc^{-1}}$, $Ω_{m0}\simeq0.270$--$0.272$, and $c\simeq1$, indicating an expansion history close to the de Sitter boundary rather than a robust phantom regime.”