Running Hubble Constant with the Redshift as a Marker of Evolutionary Dark Energy

Abstract

We discuss the interpretation of an observed running Hubble constant with the redshift, in terms of the possible underlying physical scenario. Assuming, like in the $\Lambda$CDM model, that the matter and dark energy components do not directly interact, we arrive at the conclusion that the physical content of the cosmological dynamics can always be represented with an evolutionary dark energy paradigm. We discuss both the case of the power-law running Hubble constant, and that of an optimized fitting model, both studied with the binned Pantheon Sample of the Type Ia Supernovae data. These two cases turn out to be associated with a phantom-like evolutionary dark energy.

5 pages, 2 figure

References in corpus (13)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• Cosmic Distances Calibrated to 1% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with LambdaCDM
• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Revealing Intrinsic Flat $\Lambda$CDM Biases with Standardizable Candles
• The X-ray fundamental plane of the Platinum Sample, the Kilonovae and the SNe Ib/c associated with GRBs
• Evidence of a decreasing trend for the Hubble constant
• Resolving the Hubble tension with Early Dark Energy
• Gamma-Ray Bursts, Quasars, Baryonic Acoustic Oscillations, and Supernovae Ia: new statistical insights and cosmological constraints
• Slow-rolling scalar dynamics and as solution for the Hubble tension
• A New Test of Dynamical Dark Energy Models and Cosmic Tensions in Hořava Gravity
• Decay of $f(R)$ quintessence into dark matter: mitigating the Hubble tension?
• Two Dynamical Scenarios for Binned Master Sample Interpretation