Zobrazeno 1 - 10
of 325
pro vyhledávání: '"Koussour, M."'
Publikováno v:
J. High Energy Astrophys. 44, 164-171 (2024)
In this study, we explored late-time cosmology within an extended class of theories based on $f(Q, L_m)$ gravity. This theory generalizes $f(Q)$ gravity by incorporating a non-minimal coupling between the non-metricity $Q$ and the matter Lagrangian $
Externí odkaz:
http://arxiv.org/abs/2409.18920
Publikováno v:
J. High Energy Astrophys. 44, 123-131 (2024)
Motivated by anomalies in cosmic microwave background observations, we investigate the implications of $f(Q, T)$ gravity in Bianchi type-I spacetime, aiming to characterize the universe's spatially homogeneous and anisotropic properties. By using a l
Externí odkaz:
http://arxiv.org/abs/2409.15562
Publikováno v:
Phys. Dark Universe 46, 101664 (2024)
This study explores the extension of teleparallel gravity within the framework of general relativity, introducing an algebraic function $f(T)$ dependent on the torsion scalar $T$. Motivated by the teleparallel formulation, we investigate cosmological
Externí odkaz:
http://arxiv.org/abs/2409.10757
Autor:
Koussour, M., Myrzakulov, N.
Publikováno v:
Eur. Phys. J. Plus 139, 799 (2024)
This paper is devoted to examining cosmological bouncing scenarios in the framework of the recently proposed symmetric teleparallel gravity (or $f(Q)$ gravity), where the non-metricity scalar $Q$ represents the gravitational interaction. We assume an
Externí odkaz:
http://arxiv.org/abs/2409.01040
Publikováno v:
Phys. Dark Universe 46, 101614 (2024)
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 matter Lagrangian. We analyzed a linear $f(Q, L_m)$ model of the for
Externí odkaz:
http://arxiv.org/abs/2408.04770
Publikováno v:
Physics of the Dark Universe, 46 (2024) 101577
In this paper, we investigate a cosmological model based on viscous $f(R,T)$ gravity as a potential alternative to dark energy. This model incorporates bulk viscosity and is analyzed using an effective equation of state. We consider the simplest spec
Externí odkaz:
http://arxiv.org/abs/2407.18023
We investigate the influence of bulk viscosity on late-time cosmic acceleration within an extended $f(Q, L_m)$ gravity framework, where the non-metricity $Q$ is non-minimally coupled with the matter Lagrangian $L_m$. Analyzing the function $f(Q, L_m)
Externí odkaz:
http://arxiv.org/abs/2407.08837
Publikováno v:
Eur. Phys. J. C 84, 665 (2024)
In this study, we investigate signature flips within the framework of cosmological models featuring a time-varying vacuum energy term $\Lambda(t)$. Specifically, we consider the power-law form of $\Lambda=\alpha H^n$, where $\alpha$ and $n$ are const
Externí odkaz:
http://arxiv.org/abs/2407.07535
Publikováno v:
Chinese Journal of Physics 89 (2024) 1483-1492
In this work, we investigate the dynamics of bouncing cosmologies within the framework of Weyl-type $f(Q,T)$ gravity. Here, $Q$ represents the non-metricity of the space-time, is determined by the vector field $w_\mu$, while $T$ represents the trace
Externí odkaz:
http://arxiv.org/abs/2406.15409
Publikováno v:
Physics of the Dark Universe 45 (2024) 101514
Understanding the evolution of dark energy poses a significant challenge in modern cosmology, as it is responsible for the universe's accelerated expansion. In this study, we focus on a specific $f(T)$ cosmological model and analyze its behavior usin
Externí odkaz:
http://arxiv.org/abs/2405.07357