Zobrazeno 1 - 10
of 162
pro vyhledávání: '"Rayimbaev, J."'
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
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
Implementing the concept of Dark Fluid with a Chaplygin-like equation of state within General Relativity, we construct a new higher-dimensional, static, and spherically symmetric anti-de Sitter (AdS) black hole solution. Energy conditions are explore
Externí odkaz:
http://arxiv.org/abs/2407.08326
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:
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
This paper explores models of the FLRW universe that incorporate a time-varying cosmological term $\Lambda(t)$. Specifically, we assume a power-law form for the cosmological term as a function of the scale factor: $\Lambda(t)=\Lambda_{0} a(t)^{-\alph
Externí odkaz:
http://arxiv.org/abs/2404.15982