Model-independent reconstruction of cosmic thermodynamics and dark energy dynamics

arXiv:2604.18723 · astro-ph.CO · Submitted 2026-08-19 · Read on arXiv

Afaq Maqsood, Tanima Duary

astro-ph.CO

Submitted: 2026-08-19

Updated: 2026-08-20

Comments: 13 pages, 4 figures

Journal ref: Eur. Phys. J. C 86, 963 (2026)

DOI: 10.1140/epjc/s10052-026-16223-9

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

Terminology

• Gaussian Process — 23× in this paper
• Apparent Horizon — 13× in this paper · explained in 1 episode
• Consistency — 8× in this paper · explained in 3 episodes
• Squared Exponential — 8× in this paper
• Baryon Acoustic Oscillation — 7× in this paper
• Robustness — 5× in this paper · explained in 5 episodes
• Calibration — 3× in this paper · explained in 7 episodes
• Clustering — 3× in this paper · explained in 2 episodes
• Hubble Tension — 3× in this paper · explained in 9 episodes
• Accuracy — 2× in this paper · explained in 1 episode
• Higher-order derivatives — 2× in this paper · explained in 2 episodes
• Population Synthesis — 2× in this paper · explained in 2 episodes
• Bayesian Framework — 1× in this paper · explained in 3 episodes
• Dark Energy Spectroscopic Instrument — 1× in this paper
• Gaussian Processes (GPs) — 1× in this paper · explained in 2 episodes
• Quintessence — 1× in this paper · explained in 2 episodes
• Verification — 1× in this paper · explained in 2 episodes
• alpha — 1× in this paper · explained in 1 episode

Sources

• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• The Pantheon+ Analysis: Cosmological Constraints
• The Dark Energy Survey: Cosmology Results With ~1500 New High-redshift Type Ia Supernovae Using The Full 5-year Dataset
• Union Through UNITY: Cosmology with 2,000 SNe Using a Unified Bayesian Framework
• Planck 2013 results. XVI. Cosmological parameters
• Planck 2018 results. VI. Cosmological parameters
• The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measurement of the growth rate of structure from the anisotropic correlation function between redshift 0.8 and 2.2
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• Baryon acoustic oscillations from the complete SDSS-III Ly$\alpha$-quasar cross-correlation function at $z=2.4$
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars
• DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman Alpha Forest
• DESI 2024: Reconstructing Dark Energy using Crossing Statistics with DESI DR1 BAO data
• DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
• Cosmic Distances Calibrated to 1% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with LambdaCDM
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• Small Magellanic Cloud Cepheids Observed with the Hubble Space Telescope Provide a New Anchor for the SH0ES Distance Ladder
• Cosmic Chronometers: Constraining the Equation of State of Dark Energy. I: H(z) Measurements

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