Holographic dark energy in Einstein-Cartan spin cosmology

Abstract

We show that, in Einstein-Cartan theory, the torsion scalar modifies the dust-like equation of state of non-interacting holographic dark energy with the Hubble radius as the infrared cutoff, enabling late-time cosmic acceleration within the low-redshift domain of validity, which is not realized in the corresponding model in general relativity. Using the same holographic dark energy background, we further derive the torsion-induced modification of the cosmic distance duality relation, $d_L=d_A(1+z{)}^2(1+\eta )$. In the late-time universe, the magnitude of the deviation parameter, $|\eta |$, is small but non-vanishing, reflecting the cumulative effect of torsion along the light-propagation path.

9 pages, 3 figures

References in corpus (11)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• Tensions between the Early and the Late Universe
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• Local determination of the Hubble constant and the deceleration parameter
• Einstein-Cartan Cosmologies
• Cosmological signatures of torsion and how to distinguish torsion from the dark sector
• Toward a simultaneous resolution of the $H_0$ and $S_8$ tensions: early dark energy and an interacting dark sector model
• Holographic Dark Energy and Quantum Entanglement
• Maxwell field with Torsion