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Investigating Cosmic Discordance

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arxiv 2003.04935 v2 pith:CCPXPVZ2 submitted 2020-03-10 astro-ph.CO gr-qchep-ph

Eleonora Di Valentino , Alessandro Melchiorri , Joseph Silk This is my paper · ORCID
classification astro-ph.COgr-qchep-ph
keywords constantdifferentplanckalternativeanalysisanisotropycallscatalog
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abstract

We show that a combined analysis of CMB anisotropy power spectra obtained by the Planck satellite and luminosity distance data simultaneously excludes a flat universe and a cosmological constant at $99 \%$ CL. These results hold separately when combining Planck with three different datasets: the two determinations of the Hubble constant from Riess et al. 2019 and Freedman et al. 2020, and the Pantheon catalog of high redshift supernovae type-Ia. We conclude that either LCDM needs to be replaced by a different model, or else there are significant but still undetected systematics. Our result calls for new observations and stimulates the investigation of alternative theoretical models and solutions.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Quasar cosmology II: joint analyses with Cosmic Microwave Background

    astro-ph.CO 2025-06 conditional novelty 6.0 of 10

    Quasar, supernova, BAO, DES, and CMB data are jointly compatible only in an interacting dark-energy model, not in Lambda-CDM, wCDM, or CPL.

  2. Impact of DESI BAO Data on Inflationary Parameters: stability against late-time new physics

    astro-ph.CO 2024-12 conditional novelty 6.0 of 10

    Using CMB, supernova, and DESI BAO data, this study finds that inflationary parameters n_s and A_s remain stable (shifts under 1%) when SDSS BAO data is replaced by DESI BAO data across several late-time models.

  3. Alleviating cosmological tensions with a hybrid dark sector

    astro-ph.CO 2024-12 conditional novelty 5.0 of 10

    A one-parameter interacting dark sector model can shift H0 upward and S8 downward when fit to Planck, DESI and supernova data, but the Bayesian evidence over LambdaCDM is inconclusive without SH0ES calibration.

  4. Interacting Barrow Holographic Dark Energy in Non-flat Universe

    gr-qc 2024-12 reject novelty 5.0 of 10

    Derives a non-flat interacting Barrow holographic dark energy model and fits it to CC and Pantheon data, but the statistical claim of preference is contradicted by the paper's own AIC/BIC/DIC table.

  5. Modified gravity/Dynamical Dark Energy vs $\Lambda$CDM: is the game over?

    gr-qc 2024-12 reject novelty 4.0 of 10

    An AIC/χ² comparison of exponential F(R) gravity, wCDM, and CPL models against Pantheon+, DESI DR1, cosmic chronometer, and Planck-compressed data claims ΛCDM is excluded at 4σ, but the significance conversion is not ...

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