Observational constraints on two cosmological models of f(Q) theory

M Koussour, A De - The European Physical Journal C, 2023 - Springer
In the past few years, f (Q) theories have drawn a lot of research attention in replacing
Einstein's theory of gravity successfully. The current study examines the novel cosmological …

[HTML][HTML] Constrained f (Q, T) gravity accelerating cosmological model and its dynamical system analysis

SA Narawade, M Koussour, B Mishra - Nuclear Physics B, 2023 - Elsevier
In this paper, we have presented an accelerating cosmological model of the Universe in an
extended symmetric teleparallel gravity or f (Q, T) gravity. The parametric form of the Hubble …

Quasinormal modes of black holes in f(Q) gravity

DJ Gogoi, A Övgün, M Koussour - The European Physical Journal C, 2023 - Springer
In this work, we have studied the quasinormal modes of a black hole in a model of the type f
(Q)=∑ nan QQ 0 n in f (Q) gravity by using a recently introduced method known as Bernstein …

Constraints on bulk viscosity in f (Q, T) gravity from H (z)/Pantheon+ data

M Koussour, A Errehymy, O Donmez… - Physics of the Dark …, 2024 - Elsevier
In this study, we investigate the role of bulk viscosity in f (Q, T) gravity in explaining late-time
cosmic acceleration. This model, an extension of symmetric teleparallel gravity, introduces …

Constant-roll and primordial black holes in f (Q, T) gravity

K El Bourakadi, M Koussour, G Otalora… - Physics of the Dark …, 2023 - Elsevier
In this study, we investigate the consequence of the constant-roll condition and examine the
role of a chosen form of f (Q, T) gravity, given by f (Q, T)= α Q 2+ σ T, in the cosmological …

Cosmological constraints on dark energy in f (Q) gravity: A parametrized perspective

A Mussatayeva, N Myrzakulov, M Koussour - Physics of the Dark Universe, 2023 - Elsevier
In this paper, we focus on the parametrization of the effective equation of state (EoS)
parameter within the framework of f (Q) symmetric teleparallel gravity. Here, the gravitational …

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 …

Late-time cosmology in f (Q, Lm) gravity: Analytical solutions and observational fits

Y Myrzakulov, O Donmez, M Koussour… - Physics of the Dark …, 2024 - Elsevier
In this study, we examined the late-time cosmic expansion of the universe within the
framework of f (Q, L m) gravity, where Q denotes the non-metricity and L m represents the …

Investigating the dark energy phenomenon in f (R, Lm) cosmological models with observational constraints

S Myrzakulova, M Koussour, N Myrzakulov - Physics of the Dark Universe, 2024 - Elsevier
This paper explores the dark energy phenomenon within the context of f (R, L m) gravity
theory. Two specific non-linear f (R, L m) models are considered: f (R, L m)= R 2+ L m α and f …

FLRW cosmology in Weyl type f (Q) gravity and observational constraints

GK Goswami, R Rani, JK Singh, A Pradhan - Journal of High Energy …, 2024 - Elsevier
Inspired by various works in a Weyl type f (Q) gravity to reduce some serious problems in
General Relativity Theory (GR), we develop a model of the universe in a Weyl type f (Q) …