Torsion cosmology in the light of DESI, supernovae and CMB observational constraints

Abstract

In this work, we investigate a torsion-based cosmological model within the Einstei-Cartan framework, constrained by the latest combined datasets including DESI DR2 BAO, PantheonPlus and DESY5 supernovae, and the full Planck 2018 CMB measurements (temperature, polarization, and joint NPIPE PR4 + ACT DR6 lensing). The torsion parameter is constrained to $\alpha =-0.00066\pm 0.00098$ with the full dataset combination, consistent with zero at less than $1\sigma$, while yielding a Hubble constant $H_0=68.41\pm 0.32$ km/s/Mpc and matter clustering amplitude $S_8=0.812\pm 0.006$. The model shows notable potential in alleviating cosmological tensions, reducing the $S_8$ discrepancy with KiDS-1000 from $\sim 2.3\sigma$ in $\Lambda$CDM to only $0.1\sigma$. Model comparisons based on the Akaike information criterion show consistent improvements across all datasets, with $\Delta \mathrm{AIC}$ values ranging from $-5.68$ to $-6.62$, indicating a statistically preferred fit for the torsion model. These results suggest that the torsion framework provides a physically well-motivated extension to $\Lambda$CDM, capable of simultaneously addressing key cosmological tensions while maintaining excellent agreement with diverse observational probes.

8 pages, 1 figure, comments are welcome, some references haven been addition

References in corpus (26)

• 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
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
• Cobaya: Code for Bayesian Analysis of hierarchical physical models
• On the Hubble constant tension in the SNe Ia Pantheon sample
• Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
• The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters
• The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and its Implications for Structure Growth
• Hubble Sinks In The Low-Redshift Swampland
• Interacting Dark Energy after DESI Baryon Acoustic Oscillation measurements
• Is Local $H_0$ At Odds With Dark Energy EFT?
• Nonparametric late-time expansion history reconstruction and implications for the Hubble tension in light of recent DESI and type Ia supernovae data
• Constraints on Interacting Dark Energy Models from the DESI Baryon Acoustic Oscillation and DES Supernovae Data
• Updated Cosmological Constraints in Extended Parameter Space with Planck PR4, DESI Baryon Acoustic Oscillations, and Supernovae: Dynamical Dark Energy, Neutrino Masses, Lensing Anomaly, and the Hubble Tension
• Hints of Nonminimally Coupled Gravity in DESI 2024 Baryon Acoustic Oscillation Measurements
• Neutrino cosmology after DESI: tightest mass upper limits, preference for the normal ordering, and tension with terrestrial observations
• New constraints on interacting dark energy from DESI DR2 BAO observations
• Cosmology in Extended Parameter Space with DESI Data Release 2 Baryon Acoustic Oscillations: A 2$\sigma$+ Detection of Nonzero Neutrino Masses with an Update on Dynamical Dark Energy and Lensing Anomaly
• Determining Model-independent $H_0$ and Consistency Tests
• Pressure Parametrization of Dark Energy: First and Second-Order Constraints with Latest Cosmological Data
• Revisiting the Hubble constant, spatial curvature and cosmography with time-delay and cosmic chronometer observations
• $\Lambda (t)$CDM Model as a Unified Origin of Holographic and Agegraphic Dark Energy Models
• Scalar-Tensor Gravity and DESI 2024 BAO data
• Small cosmological constant from a peculiar inflaton potential
• Revisiting Friedmann-like cosmology with torsion: newest constraints from high-redshift observations

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• Metastability in Emergent Dark Energy: A New Framework Confronting Cosmological Observations
• Evidence for evolving dark energy from DESI DR2 BAO and Pantheon${}^{+}$, DES-Dovekie, and Union3
• Cosmology in the De Donder-Weyl Formulation of Einstein-Cartan Gravity
• Late-time cosmological constraints on three holographic dark energy models with DESI DR2 BAO and Type Ia supernovae
• Thermodynamic reconstruction in observationally constrained dynamical dark energy models