2024/03/20 by Aram Aguilar, Aguilar, Aram, Celia Escamilla‐Rivera +5 · 2 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Parallel Computing and Optimization Techniques
paper · pdf · doi:10.48550/arxiv.2403.13708
openalex publication_date 2024/03/20 · openalex created_date 2024/03/22 · openalex updated_date 2026/07/28
There have been several works that have studied scalar cosmological perturbations in f(T) teleparallel gravity theories to understand early cosmic times dynamics. In this direction, the perturbations presented have been performed by considering f(T) extensions as an effective fluid-like scheme, where the equation-of-state contains extra terms due to the torsion. In this work, we discuss introducing a non-fluid-like approach as a direct consequence of f(T) extensions, particularly for f(T) power law model scenarios. This approach will be compared using CMB constraints data from Planck 2018 and SDSS catalogs, showing a change in about 17% in Cl at l< 101 from the ones reported in the literature as a fluid-like approach, which will bring significant changes in the analysis on cosmological tensions at early cosmic times.