Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Solanki, Raja"'
Publikováno v:
Journal of High Energy Astrophysics, 43 (2024) 258-267
The article investigates cosmological applications of $f(Q)$ theories in a non-coincident formalism. We explore a new $f(Q)$ theory dynamics utilizing a non-vanishing affine connection involving a non-constant function $\gamma(t)=-a^{-1}\dot{H}$, res
Externí odkaz:
http://arxiv.org/abs/2410.00922
Publikováno v:
Astroparticle Physics, 163 (2024) 103013
This article explores the impact of bulk viscosity on understanding the universe's accelerated expansion within the context of modified $f(T,\mathcal{T})$ gravity, which is an extension of the $f(T)$ gravitational theory, allowing a broad coupling be
Externí odkaz:
http://arxiv.org/abs/2407.09970
Publikováno v:
General Relativity and Gravitation, 56 (2024) 63
In this article, we attempt to explore the dark sector of the universe i.e. dark matter and dark energy, where the dark energy components are related to the modified $f(Q)$ Lagrangian, particularly a power law function $f(Q)= \gamma \left(\frac{Q}{Q_
Externí odkaz:
http://arxiv.org/abs/2405.07484
Publikováno v:
Physics Scripta 99 (2024) 065031
This article explores matter bounce non-singular cosmology in $f(R,L_m)$ gravity. We consider two non-linear $f(R,L_m)$ functional forms, specifically, $f(R,L_m) = \frac{R}{2} + \lambda R^2 + \alpha L_m$ and $f(R,L_m) = \frac{R}{2} + L_m ^\beta + \ga
Externí odkaz:
http://arxiv.org/abs/2405.04797
Publikováno v:
Chinese Physics C, 48(9) (2024) 095102
In this article, we offer the dynamical system analysis of the DBI (Dirac-Born-Infeld) scalar field in a modified $f(Q)$ gravity context. We have taken a polynomial form of modified gravity and used two different kinds of scalar potential, i.e., poly
Externí odkaz:
http://arxiv.org/abs/2402.11300
Publikováno v:
Physics of the Dark Universe, 43 (2024) 101421
In this article, we consider a newly proposed parameterization of the viscosity coefficient $\zeta$, specifically $\zeta=\bar{\zeta}_0 {\Omega^s_m} H $, where $\bar{\zeta}_0 = \frac{\zeta_0}{{\Omega^s_{m_0}}} $ within the coincident $f(Q)$ gravity fo
Externí odkaz:
http://arxiv.org/abs/2401.05448
Publikováno v:
Physics Scripta 99 (2024) 055021
In this article, we investigate scalar field cosmology in the coincident $f(Q)$ gravity formalism. We calculate the motion equations of $f(Q)$ gravity under the flat Friedmann-Lema\^{i}tre-Robertson-Walker background in the presence of a scalar field
Externí odkaz:
http://arxiv.org/abs/2309.11198
Publikováno v:
Chinese Journal of Physics, 85 (2023) 74-88
In this work, we intend to explore wormhole geometries in the framework of $f(R,L_m)$ gravity. We derive the field equations for the generic $f(R,L_m)$ function by assuming the static and spherically symmetric Morris-Thorne wormhole metric. Then we c
Externí odkaz:
http://arxiv.org/abs/2306.10969
Publikováno v:
Communications in Theoretical Physics, 75(7) (2023) 075401
In this article, we investigate the observed cosmic acceleration in the framework of a cosmological $f(R,L_m)$ model dominated by bulk viscous matter in an anisotropic background. We consider the LRS Bianchi type I metric and derive the Friedmann equ
Externí odkaz:
http://arxiv.org/abs/2305.07683
Publikováno v:
Universe 9(4) (2023) 163
In this article, we attempt to describe cosmic late-time acceleration of the universe in the framework of $f(R,L_m)$ gravity by using an effective equation of state when the account is taken of bulk viscosity. We presume a non-linear $f(R,L_m)$ funct
Externí odkaz:
http://arxiv.org/abs/2303.16973