Teleparallel gravity: from theory to cosmology

S Bahamonde, KF Dialektopoulos… - Reports on Progress …, 2023 - iopscience.iop.org
Teleparallel gravity (TG) has significantly increased in popularity in recent decades, bringing
attention to Einstein's other theory of gravity. In this Review, we give a comprehensive …

The effective field theory approach to the strong coupling issue in f (T) gravity

YM Hu, Y Zhao, X Ren, B Wang… - Journal of Cosmology …, 2023 - iopscience.iop.org
We investigate the scalar perturbations and the possible strong coupling issues of f (T)
around a cosmological background, applying the effective field theory (EFT) approach. We …

On the viability of f (Q) gravity models

A De, TH Loo - Classical and Quantum Gravity, 2023 - iopscience.iop.org
In general relativity, the contracted Bianchi identity makes the field equation compatible with
the energy conservation, likewise in f (R) theories of gravity. We show that this classical …

Black holes in f (T, B) gravity: exact and perturbed solutions

S Bahamonde, A Golovnev, MJ Guzmán… - … of Cosmology and …, 2022 - iopscience.iop.org
Spherically symmetric solutions of theories of gravity built one fundamental class of solutions
to describe compact objects like black holes and stars. Moreover, they serve as starting point …

Slow-roll inflation in f (R, T) gravity and a modified Starobinsky-like inflationary model

M Gamonal - Physics of the Dark Universe, 2021 - Elsevier
In this work, we studied the slow-roll approximation of cosmic inflation within the context of f
(R, T) gravity, where R is the scalar curvature, and T is the trace of the energy–momentum …

Solar system tests in modified teleparallel gravity

S Bahamonde, JL Said, M Zubair - Journal of Cosmology and …, 2020 - iopscience.iop.org
In this paper, we study different Solar System tests in a modified Teleparallel gravity theory
based on an arbitrary function f (T, B) which depends on the scalar torsion T and the …

Model parameters in the context of late time cosmic acceleration in f (Q, T) gravity

L Pati, B Mishra, SK Tripathy - Physica Scripta, 2021 - iopscience.iop.org
The dynamical aspects of some accelerating models are investigated in the framework of an
extension of symmetric teleparallel gravity dubbed as f (Q, T) gravity. In this gravity theory …

Issues of Lorentz-invariance in f (T) gravity and calculations for spherically symmetric solutions

A Golovnev - Classical and Quantum Gravity, 2021 - iopscience.iop.org
The f (T) gravity is nowadays being widely used for cosmological model building, as well as
for constructing spherically symmetric solutions. In its classical pure tetrad formulation it …

[HTML][HTML] Alleviating the H0 Tension in Scalar–Tensor and Bi-Scalar–Tensor Theories

M Petronikolou, EN Saridakis - Universe, 2023 - mdpi.com
Herein, we investigate scalar–tensor and bi-scalar–tensor modified theories of gravity that
can alleviate the H 0 tension. In the first class of theories, we show that by choosing …

Deflection angle and lensing signature of covariant 𝖿 (𝖳) gravity

X Ren, Y Zhao, EN Saridakis… - Journal of Cosmology and …, 2021 - iopscience.iop.org
We calculate the deflection angle, as well as the positions and magnifications of the lensed
images, in the case of covariant f (T) gravity. We first extract the spherically symmetric …