Cosmological models with a hybrid scale factor in an extended gravity theory

Abstract

A general formalism to investigate Bianchi type $V{I}_h$ universes is developed in an extended theory of gravity. A minimally coupled geometry and matter field is considered with a rescaled function of $f(R,T)$ substituted in place of the Ricci scalar $R$ in the geometrical action. Dynamical aspects of the models are discussed by using a hybrid scale factor that behaves as power law in an initial epoch and as an exponential form at late epoch. The power law behaviour and the exponential behaviour appear as two extreme cases of the present model.

arXiv comment8 pages, 2 figures, Accepted for Publication in Modern Physics Letter A

References in corpus (35)

• f(R) Theories Of Gravity
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Modified Gravity and Cosmology
• Introduction to Modified Gravity and Gravitational Alternative for Dark Energy
• f(R,T) gravity
• Exploring the Expansion History of the Universe
• Accelerating Universes with Scaling Dark Matter
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Phantom Energy and Cosmic Doomsday
• Properties of singularities in (phantom) dark energy universe
• The final state and thermodynamics of dark energy universe
• Accelerating universe from F(T) gravity
• Hubble parameter measurement constraints on the redshift of the deceleration-acceleration transition, dynamical dark energy, and space curvature
• f(T) gravity mimicking dynamical dark energy. Background and perturbation analysis
• Spherically symmetric solutions in f(R)-gravity via Noether Symmetry Approach
• The Cosmology of Modified Gauss-Bonnet Gravity
• Teleparallel equivalent of Gauss-Bonnet gravity and its modifications
• Nonminimal torsion-matter coupling extension of f(T) gravity
• Locally Rotationally Symmetric Bianchi Type $I$ Cosmology in $f(R,T)$ Gravity
• How isotropic is the Universe?
• Cosmological solutions from Induced Matter Model applied to 5D f(R,T) gravity and the shrinking of the extra coordinate
• Some Bianchi Type Cosmological Models in f(R) Gravity
• Exact Solutions of Bianchi Types $I$ and $V$ Spacetimes in $f(R)$ Theory of Gravity
• Stability of the Einstein static Universe in $f(R,T)$ gravity
• A note on constant curvature solutions in cylindrically symmetric metric $f(R)$ Gravity
• Non-Vacuum Bianchi Types I and V in f(R) Gravity
• Anisotropic dark energy model with a hybrid scale factor
• The cosmic jerk parameter in f(R) gravity
• Plane Symmetric Cosmological Model with Quark and Strange Quark Matter in f(R,T) Theory of Gravity
• Anisotropic solutions in f(R) Gravity
• Probing the time dependence of dark energy
• Late time Acceleration and Role of Skewness in Anisotropic models
• Energy and momentum of Bianchi Type VI_h Universes
• Dynamics of Bianchi $V{I}_h$ Universe with Bulk Viscous Fluid in Modified Gravity
• Rip Brane Cosmology from 4d Inhomogeneous Dark Fluid Universe

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• Model parameters in the context of late time cosmic acceleration in $f(Q,T)$ gravity
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• Anisotropic cosmological reconstruction in $f(R,T)$ gravity
• Bouncing Models in an Extended Gravity Theory
• Phantom cosmology in an Extended Theory of Gravity
• Cosmological models with a Hybrid Scale Factor
• Accelerating models with a hybrid scale factor in extended gravity
• Rip cosmologies, Wormhole Solutions and Big Trip in the $f(T,\mathcal{T})$ theory of gravity
• Role of Extended Gravity Theory in Matter Bounce Dynamics
• Cosmological model with time varying deceleration parameter in $F(R,G)$ gravity
• Cosmological models with squared trace in modified gravity
• Observational Constraints on Hybrid Scale Factor in f(Q,T) Gravity with Anisotropic Space-Time
• A new class of holographic dark energy models in LRS Bianchi Type-I
• Axially magnetized Dark Energy cosmological model
• Investigating the physical and geometrical parameters of the cosmological models with anisotropic background
• Stability, dark energy parameterization and swampland aspect of Bianchi Type-$V{I}_h$ cosmological models with f(R, T)-gravity
• Bouncing cosmological models in a functional form of F(R) gravity
• Magnetized cosmological model with variable deceleration parameter
• Effect of bulk viscosity in cosmic acceleration
• Lyra's cosmology of homogeneous and isotropic universe in Brans-Dicke theory