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Running Hubble constant: evolutionary Dark Energy

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arxiv 2411.07060 v3 pith:FC6NPT3G submitted 2024-11-11 gr-qc

classification gr-qc
keywords darkenergyhubbleconstantevolutionarylambdarunninganalysis
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abstract

We discuss an evolutionary dark energy model, based on the presence of non-equilibrium effects on the dark energy constituents, which are described via a bulk viscosity contribution. We implement the proposed dynamics by the analysis of the 40-bins Type Ia Supernovae (SNe) Pantheon sample data, in order to outline the existence of a running Hubble constant with the redshift. Via a fitting procedure, we determine the value of the additional parameter that our model possesses with respect a standard $\Lambda$ Cold Dark Matter ($\Lambda$CDM) scenario. As important result, the evolutionary dark energy proposal seems more appropriate to describe the binned SN analysis with respect to the $\Lambda$CDM Hubble parameter, i.e. a non running value for the Hubble constant over the bins.

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Forward citations

Cited by 5 Pith papers

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

  1. BAO miscalibration cannot rescue late-time solutions to the Hubble tension

    astro-ph.CO 2025-10 accept novelty 6.0 of 10

    Even after rescaling BAO data to prefer H0≈73 km/s/Mpc, none of six tested late-time dark-energy models can resolve the Hubble tension once unanchored SNeIa and CMB geometry are included.

  2. A Critical Reanalysis of Supernova Type Ia Data

    astro-ph.CO 2025-01 conditional novelty 5.0 of 10

    A reanalysis of Pantheon supernova data finds residuals are better fit by a Logistic than a Gaussian distribution, shifting H0 upward and revealing survey inconsistencies.

  3. Interpretation of the binned SNe Ia Master Sample data via a scalar quintessence component: phantom transition?

    astro-ph.CO 2026-07 unverdicted novelty 4.0 of 10

    Viscous quintessence model fitted to binned SNe Ia data shows no phantom transition and lower transition redshift than DESI.

  4. Effect of Peak Absolute Magnitude of Type Ia Supernovae and Sound Horizon Values on Hubble Tension using DESI results

    astro-ph.CO 2024-12 conditional novelty 4.0 of 10

    Using DESI DR1, Pantheon+ and cosmic chronometer data, the authors show that changing the Type Ia supernova absolute magnitude and sound-horizon priors moves the inferred H0 from about 73 to 68 km/s/Mpc, reducing the ...

  5. Testing $\gamma\delta$CDM Model in the Redshift Bins

    astro-ph.CO 2025-01

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