Do we really need alternatives to the omega 0 omega a CDM parameterization after the DESI DR2?

arXiv:2608.01215 · astro-ph.CO, gr-qc · Submitted 2026-08-02 · Read on arXiv

Youri Carloni, Orlando Luongo, Marek Biesiada

astro-ph.CO, gr-qc

Submitted: 2026-08-02

Comments: 15 pages, 7 figures, 4 tables

Code: https://github.com/brinckmann/montepython_public

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Quintessence — 17× in this paper · explained in 2 episodes
• Accuracy — 8× in this paper · explained in 1 episode
• Benchmark — 7× in this paper · explained in 2 episodes
• Degeneracy — 4× in this paper · explained in 3 episodes
• Reconstruction Error — 2× in this paper · explained in 2 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Deviance Information Criterion — 1× in this paper
• Fine-Tuning — 1× in this paper · explained in 5 episodes
• Hubble Tension — 1× in this paper · explained in 9 episodes

Sources

• Dynamical Dark Energy in light of the DESI DR2 Baryonic Acoustic Oscillations Measurements
• Quintessential interpretation of the evolving dark energy in light of DESI
• Interpreting DESI 2024 BAO: late-time dynamical dark energy or a local effect?
• Robust Preference for Dynamical Dark Energy in DESI BAO and SN Measurements
• Characterizing repulsive gravity with curvature eigenvalues
• Toward an invariant definition of repulsive gravity
• Dark Energy and the Accelerating Universe
• The Physics of Cosmic Acceleration
• Dark energy constraints using gamma-ray burst correlations with DESI 2024 data
• Dark energy reconstructions combining BAO data with galaxy clusters and intermediate redshift catalogs
• Cosmic distance duality after DESI 2024 data release and dark energy evolution
• Testing generalized logotropic models with cosmic growth
• Unifying the dark sector through a single matter fluid with non-zero pressure
• Cosmological constraints from calibrated $E_p-E_{iso}$ gamma-ray burst correlation by using DESI 2024 data release
• Intermediate redshift calibration of Gamma-ray Bursts and cosmic constraints in non-flat cosmology
• Cosmological transition epoch from gamma-ray burst correlations
• Phase-space analysis of dark energy models in non-minimally coupled theories of gravity
• Dark Energy and Dark Matter from an additional adiabatic fluid
• Tracing dark energy history with gamma ray bursts
• Observational Probes of Cosmic Acceleration

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