@Article{KumarNuneYada:2023:NeCoCo,
author = "Kumar, Suresh and Nunes, Rafael da Costa and Yadav, Priya",
affiliation = "{Indira Gandhi University} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Indira Gandhi University}",
title = "New cosmological constraints on f (T) gravity in light of full
Planck-CMB and type Ia supernovae data",
journal = "Physical Review D",
year = "2023",
volume = "107",
number = "6",
pages = "e063529",
month = "Mar.",
abstract = "We investigate two new observational perspectives in the context
of torsional gravitational modification of general relativity,
i.e., the f(T) gravity: (i) We use Pantheon data of type Ia
supernovae motivated by a time variation of the Newton's constant
on the supernovae distance modulus relation, and find that a joint
analysis with baryon acoustic oscillations (BAO) and big bang
nucleosynthesis (BBN), i.e., Pantheon + BAO + BBN, provides
constraints on the effective free parameter of the theory to be
well compatible with the ACDM prediction; (ii) We present the
framework of f(T) gravity at the level of linear perturbations
with the phenomenological functions, namely the effective
gravitational coupling mu and the light deflection parameter E,
which are commonly used to parametrize possible modifications of
the Poisson equation relating the matter density contrast to the
lensing and the Newtonian potentials, respectively. We use the
available cosmic microwave background (CMB) datasets from the
Planck 2018 release to constrain the free parameters of the f(T)
power-law gravity and ACDM models. We find that CMB data, and its
joint analyses with Pantheon and BAO data constrain the f(T)
power-law gravity scenario to be practically indistinguishable
from the ACDM model. We obtain the strongest limits ever reported
on f(T) power-law gravity scenario at the cosmological level.",
doi = "10.1103/PhysRevD.107.063529",
url = "http://dx.doi.org/10.1103/PhysRevD.107.063529",
issn = "1550-2368 and 1550-7998",
language = "en",
targetfile = "PhysRevD.107.063529.pdf",
urlaccessdate = "02 maio 2024"
}