Cosmological observational constraints on the power law f(Q) type modified gravity theory

S Mandal, S Pradhan, PK Sahoo, T Harko - The European Physical …, 2023‏ - Springer
In modern cosmology, the curiosity of ultimately understanding the nature of the dark energy
controlling the recent acceleration of the Universe motivates us to explore its properties by …

Late-time cosmology with phantom dark-energy in f (Q) gravity

A Lymperis - Journal of Cosmology and Astroparticle Physics, 2022‏ - iopscience.iop.org
Motivated by the exciting features and a recent proposed general form of the function of non-
metricity scalar Q, we investigate the cosmological implications in f (Q) gravity, through the …

Dark matter as a Weyl geometric effect

P Burikham, T Harko, K Pimsamarn, S Shahidi - Physical Review D, 2023‏ - APS
We investigate the possibility that the observed behavior of test particles outside galaxies,
which is usually explained by assuming the existence of dark matter, is the result of the …

Linear redshift parametrization of deceleration parameter in f (R, Lm) gravity

Y Myrzakulov, O Donmez, GDA Yildiz, E Güdekli… - Physics of the Dark …, 2024‏ - Elsevier
In this study, we investigate the linear redshift parametrization of q (z) within the framework
of f (R, L m) gravity, using constraints derived from H (z)/P antheon samples. We consider a …

Palatini formulation of the conformally invariant f R, L m gravity theory

T Harko, S Shahidi - The European Physical Journal C, 2022‏ - Springer
We investigate the field equations of the conformally invariant models of gravity with
curvature-matter coupling, constructed in Weyl geometry, using the Palatini formalism. We …

Self-similar cosmological solutions in symmetric teleparallel theory: Friedmann-Lemaître-Robertson-Walker spacetimes

N Dimakis, M Roumeliotis, A Paliathanasis… - Physical Review D, 2022‏ - APS
The existence of self-similar solutions is discussed in symmetric teleparallel f (Q) theory for a
Friedmann-Lemaître-Robertson-Walker background geometry with zero and nonzero spatial …

Accelerating Universe scenario in anisotropic f (Q) cosmology

M Koussour, M Bennai - Chinese Journal of Physics, 2022‏ - Elsevier
In this paper, we investigate the exact solution of an anisotropic space-time in the context of f
(Q) gravity, where f Q is the arbitrary function of the non-metricity scalar Q. Here, we consider …

Cosmological sudden singularities in f(RT) gravity

TB Gonçalves, JL Rosa, FSN Lobo - The European Physical Journal C, 2022‏ - Springer
In this work, we study the possibility of finite-time future cosmological singularities appearing
in f (R, T) gravity, where R is the Ricci scalar and T is the trace of the stress-energy tensor …

Transit cosmological models in gravity theory

DC Maurya, R Myrzakulov - The European Physical Journal C, 2024‏ - Springer
In the present paper, we investigate some exact cosmological models in F (R, T¯) gravity
theory. We have considered the arbitrary function F (R, T¯)= R+ λ T¯ where λ is an arbitrary …

Compact stellar structures in Weyl geometric gravity

Z Haghani, T Harko - Physical Review D, 2023‏ - APS
We consider the structure and physical properties of specific classes of neutron, quark, and
Bose-Einstein condensate stars in the conformally invariant Weyl geometric gravity theory …