Curvature driven acceleration : a utopia or a reality ?

Abstract

The present work shows that a combination of nonlinear contribution from the Ricci curvature in Einstein field equations can drive a late time acceleration of expansion of the universe. The transit from the decelerated to the accelerated phase of expansion takes place smoothly without having to resort to a study of asymptotic behaviour. This result emphasizes the need for thorough and critical examination of models with nonlinear contribution from the curvature.

8 pages, 4 figures

References in corpus (5)

• The Cosmology of Generalized Modified Gravity Models
• WMAP constraints on low redshift evolution of dark energy
• Dark Energy Dominance and Cosmic Acceleration in First Order Formalism
• Consistent modified gravity: dark energy, acceleration and the absence of cosmic doomsday
• Cosmological dynamics of R^n gravity

Cited by in corpus (41)

• In the Realm of the Hubble tension $-$ a Review of Solutions
• Conditions for the cosmological viability of f(R) dark energy models
• Dark Energy from structure: a status report
• f(R) gravity theories in Palatini formalism: cosmological dynamics and observational constraints
• Brans-Dicke Scalar Field as a Chameleon
• Testing backreaction effects with observations
• New observational constraints on $f(R)$ gravity from cosmic chronometers
• Cosmological Effects of Nonlinear Electrodynamics
• Finite-time Cosmological Singularities and the Possible Fate of the Universe
• Can f(R) Modified Gravity Theories Mimic a LCDM Cosmology?
• Is exponential gravity a viable description for the whole cosmological history?
• An $f(R)$ gravitation for galactic environments
• Reconstruction of the Scalar-Tensor Lagrangian from a LCDM Background and Noether Symmetry
• On the curvature of the present-day Universe
• Accelerating Universe in Modified Theories of Gravity
• Generalized second law in modified theory of gravity
• In search of the dark matter dark energy interaction: a kinematic approach
• Noether Charge and Black Hole Entropy in Modified Theories of Gravity
• A parametric reconstruction of the cosmological jerk from diverse observational data sets
• Acceleration of the universe: a reconstruction of the effective equation of state
• Metric gravity theories and cosmology. I. Physical interpretation and viability
• Consistency of $f(R)=\sqrt{R^2-R_0^2}$ Gravity with the Cosmological Observations in Palatini Formalism
• Emergent Dark Energy, neutrinos and cosmological tensions
• Inflation in mimetic f(G) gravity
• Testing logarithmic corrections on $R^2$-exponential gravity by observational data
• Cosmic acceleration in non-canonical scalar field model - An interacting scenario
• Reconstruction of $f(R)$ gravity models for an accelerated universe using Raychaudhuri equation
• Understanding the origin of CMB constraints on Dark Energy
• Spherically symmetric collapse of a perfect fluid in f(R) gravity
• Reconstruction of interaction rate in Holographic dark energy
• Acceleration of the Universe in f(R) Gravity Models
• Accelerating Universe as Window for Extra Dimensions
• Observational tests of a two parameter power-law class modified gravity in Palatini formalism
• Can neutrino viscosity drive the late time cosmic acceleration?
• Dilaton Dark Energy Model in f(R), f(T) and Horava-Lifshitz Gravities
• Reconstruction of $f(R)$ lagrangian from a massive scalar field
• Primordial Black Hole Pair Creation Probability in Modified Gravitational Theory
• Probability for Primordial Black Holes Pair in 1/R Gravity
• A new pressure-parametric cosmological model
• Dimension Driven Accelerating Universe
• Perturbations In Some Dark Energy Models