Can gravity challenge ?

L Atayde, N Frusciante - Physical Review D, 2021 - APS
We study observational constraints on the nonmetricity f (Q)-gravity which reproduces an
exact Λ CDM background expansion history while modifying the evolution of linear …

[HTML][HTML] First evidence that non-metricity f (Q) gravity could challenge ΛCDM

FK Anagnostopoulos, S Basilakos, EN Saridakis - Physics Letters B, 2021 - Elsevier
We propose a novel model in the framework of f (Q) gravity, which is a gravitational
modification class arising from the incorporation of non-metricity. The model has General …

Signatures of gravity in cosmology

N Frusciante - Physical Review D, 2021 - APS
We investigate the impact on cosmological observables of f (Q)-gravity, a specific class of
modified gravity models in which gravity is described by the nonmetricity scalar, Q. In …

[HTML][HTML] Constraint on the equation of state parameter (ω) in non-minimally coupled f (Q) gravity

S Mandal, PK Sahoo - Physics Letters B, 2021 - Elsevier
We study observational constraints on the modified symmetric teleparallel gravity, the non-
metricity f (Q) gravity, which reproduces background expansion of the universe. For this …

gravity and neutrino physics

L Atayde, N Frusciante - Physical Review D, 2023 - APS
Within the f (Q)-gravity framework we perform a phenomenological study of the cosmological
observables in light of the degeneracy between neutrinos physics and the modified gravity …

Cosmological perturbation theory in f (Q, T) gravity

A Nájera, A Fajardo - Journal of Cosmology and Astroparticle …, 2022 - iopscience.iop.org
We developed the cosmological linear theory of perturbations for f (Q, T) gravity, which is an
extension of symmetric teleparallel gravity, with Q the non-metricity and T the trace of the …

Constraints on gravity from probing the large-scale structure

L Lombriser, A Slosar, U Seljak, W Hu - Physical Review D—Particles, Fields …, 2012 - APS
We study cosmological constraints on metric f (R) gravity models that are designed to
reproduce the Λ CDM expansion history with modifications to gravity described by a …

Viable models are practically indistinguishable from

S Nesseris, S Basilakos, EN Saridakis… - Physical Review D …, 2013 - APS
We investigate the cosmological predictions of several f (T) models, with up to two
parameters, at both the background and the perturbation levels. Using current cosmological …

Cosmological hints of modified gravity?

E Di Valentino, A Melchiorri, J Silk - Physical Review D, 2016 - APS
The recent measurements of cosmic microwave background (CMB) temperature and
polarization anisotropies made by the Planck satellite have provided impressive …

Cosmology in gravity: A unified dynamical systems analysis of the background and perturbations

W Khyllep, J Dutta, EN Saridakis, K Yesmakhanova - Physical Review D, 2023 - APS
Motivated by the fact that cosmological models based on f (Q) gravity are very efficient in
fitting observational datasets at both background and perturbation levels, we perform a …