Cosmological Distances And Hubble Tension In Einstein-Cartan Theory
General Relativity and Quantum Cosmology
2023-09-15 v2
Abstract
We analyze the measurement of cosmological distances in the presence of torsion in both Einstein-Cartan and Poincare gauge theory of gravity. Using the modified cosmological distance measurements, we use the observed time delays in gravitational lensing systems to determine the Hubble parameter. The results show the measured Hubble parameter from a lensing system can be less than its expected value in General Relativity for certain models of torsion and its associated density parameter. This can reduce the tension between late-time and early-universe measurements of the Hubble parameter, the so-called Hubble tension.
Keywords
Cite
@article{arxiv.2305.00415,
title = {Cosmological Distances And Hubble Tension In Einstein-Cartan Theory},
author = {Siamak Akhshabi and Saboura Zamani},
journal= {arXiv preprint arXiv:2305.00415},
year = {2023}
}
Comments
16 pages, 10 figures. Some discussions and clarifications added. Accepted to GRG