Do consistent $F(R)$ models mimic General Relativity plus $\Lambda$?

Abstract

Modified gravity models are subject to a number of consistency requirements which restrict the form that the function $F(R)$ can take. We study a particular class of $F(R)$ functions which satisfy various constraints that have been found in the literature. These models have a late time accelerating epoch, and an acceptable matter era. We calculate the Friedmann equation for our models, and show that in order to satisfy the constraints we impose, they must mimic General Relativity plus $\Lambda$ throughout the cosmic history, with exponentially suppressed corrections. We also find that the free parameters in our model must be fine tuned to obtain an acceptable late time accelerating phase. We discuss the generality of this conclusion.

8 pages, 4 figures. References added

References in corpus (12)

• Modified f(R) gravity consistent with realistic cosmology: from matter dominated epoch to dark energy universe
• Cosmological viability of f(R)-gravity as an ideal fluid and its compatibility with a matter dominated phase
• Conditions for the cosmological viability of f(R) dark energy models
• Are f(R) dark energy models cosmologically viable ?
• The Large Scale Structure of f(R) Gravity
• Dynamics of Linear Perturbations in f(R) Gravity
• Stability of Cosmological Solution in f(R) Models of Gravity
• A f(R) gravity without cosmological constant
• Ghosts, Instabilities, and Superluminal Propagation in Modified Gravity Models
• Viability of f(R) Theories with Additional Powers of Curvature
• Ghost Constraints on Modified Gravity
• Curvature scalar instability in f(R) gravity

Cited by in corpus (386)

• f(R) Theories Of Gravity
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Modified Gravity and Cosmology
• f(R) theories
• Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
• Cosmology and Fundamental Physics with the Euclid Satellite
• Cosmology and fundamental physics with the Euclid satellite
• Class of viable modified $f(R)$ gravities describing inflation and the onset of accelerated expansion
• Cosmological Tests of Modified Gravity
• The Physics of Cosmic Acceleration
• Modified f(R) gravity unifying R^m inflation with \LambdaCDM epoch
• Testing General Relativity in Cosmology
• Observational signatures of f(R) dark energy models that satisfy cosmological and local gravity constraints
• Approaches to Understanding Cosmic Acceleration
• Cosmological reconstruction of realistic modified F(R) gravities
• Construction of cosmologically viable f(G) gravity models
• Extended Gravity Cosmography
• The pattern of growth in viable f(R) cosmologies
• f(R) Gravity and Chameleon Theories
• Solar system and equivalence principle constraints on f(R) gravity by chameleon approach
• Modified gravity models of dark energy
• Phantom crossing, equation-of-state singularities, and local gravity constraints in f(R) models
• Cosmography of f(R) gravity
• Searching for modified growth patterns with tomographic surveys
• Curing singularities in cosmological evolution of F(R) gravity
• The Subaru FMOS galaxy redshift survey (FastSound). IV. New constraint on gravity theory from redshift space distortions at $z\sim 1.4$
• Conditions for the cosmological viability of the most general scalar-tensor theories and their applications to extended Galileon dark energy models
• Effective gravitational couplings for cosmological perturbations in the most general scalar-tensor theories with second-order field equations
• Non-singular exponential gravity: a simple theory for early- and late-time accelerated expansion
• Effective Field Theory of Cosmic Acceleration: an implementation in CAMB
• Cluster Constraints on f(R) Gravity
• Constraints on Perturbative f(R) Gravity via Neutron Stars
• Testing gravity with CAMB and CosmoMC
• A Singularity Problem with f(R) Dark Energy
• Exponential Gravity
• Dark energy in Horndeski theories after GW170817: A review
• Spherical symmetry in $f(R)$-gravity
• Recent Advances on Inflation
• Inflation and late-time cosmic acceleration in non-minimal Maxwell-$F(R)$ gravity and the generation of large-scale magnetic fields
• N-body Simulations for f(R) Gravity using a Self-adaptive Particle-Mesh Code
• Relativistic stars in f(R) gravity, and absence thereof
• Inflation in $f(R,\varphi )$-theories and mimetic gravity scenario
• Locally Rotationally Symmetric Bianchi Type $I$ Cosmology in $f(R,T)$ Gravity
• Vainshtein screening in a cosmological background in the most general second-order scalar-tensor theory
• Inflationary cosmology and the late-time accelerated expansion of the universe in non-minimal Yang-Mills-$F(R)$ gravity and non-minimal vector-$F(R)$ gravity
• Generalized Galileon cosmology
• Constraints on scalar-tensor models of dark energy from observational and local gravity tests
• Solar system constraints on f(G) gravity models
• Unifying Holographic Inflation with Holographic Dark Energy: a Covariant Approach
• Crossing of the phantom divide in modified gravity
• Observational constraints on Galileon cosmology
• Unifying of Inflation with Early and Late Dark Energy Epochs in Axion $F(R)$ Gravity
• Bouncing cosmology with future singularity from modified gravity
• Non-linear Evolution of Matter Power Spectrum in Modified Theory of Gravity
• Classifying and avoiding singularities in the alternative gravity dark energy models
• Cosmological evolution in exponential gravity
• The nonlinear matter and velocity power spectra in f(R) gravity
• Phase-space analysis of interacting phantom cosmology
• On neutron stars in f(R) theories: small radii, large masses and large energy emitted in a merger
• Matter perturbations in Galileon cosmology
• Time-dependent matter instability and star singularity in $F(R)$ gravity
• Notes on $f(T)$ Theories
• Nonlocal Models of Cosmic Acceleration
• The dispersion of growth of matter perturbations in f(R) gravity
• Density perturbations in general modified gravitational theories
• Aspects of cosmological expansion in F(R) gravity models
• Density perturbations in f(R) gravity theories in metric and Palatini formalisms
• Cosmological Constraints on $f(G)$ Dark Energy Models
• Relativistic stars in f(R) and scalar-tensor theories
• Observational constraints on viable f(R) parametrizations with geometrical and dynamical probes
• Thermodynamics in $F(R)$ gravity with phantom crossing
• Matter Bounce Loop Quantum Cosmology from $F(R)$ Gravity
• Cosmic expansion and growth histories in Galileon scalar-tensor models of dark energy
• What can Cosmology tell us about Gravity? Constraining Horndeski with Sigma and Mu
• Evolution of linear cosmological perturbations and its observational implications in Galileon-type modified gravity
• Generalizing the running vacuum energy model and comparing with the entropic-force models
• Stability of Schwarzschild-like solutions in f(R,G) gravity models
• Dark energy, inflation and dark matter from modified F(R) gravity
• Relativistic stars in f(R) gravity
• Modified Gauss-Bonnet gravity with Lagrange multiplier constraint as mimetic theory
• Cosmographic Constraints and Cosmic Fluids
• Validation of Energy Conditions in Wormhole Geometry within Viable $f(R)$ Gravity
• Rescaled Einstein-Hilbert Gravity from $f(R)$ Gravity: Inflation, Dark Energy and the Swampland Criteria
• Cluster Abundance in f(R) Gravity Models
• Observational Viability and Stability of Nonlocal Cosmology
• Initial and final de Sitter universes from modified $f(R)$ gravity
• Generalizing the coupling between geometry and matter: $f(R,L_m,T)$ gravity
• Can higher curvature corrections cure the singularity problem in f(R) gravity?
• Constraints and analytical solutions of $f(R)$ theories of gravity using Noether symmetries
• Vainshtein mechanism in second-order scalar-tensor theories
• Cosmic history of viable exponential gravity: Equation of state oscillations and growth index from inflation to dark energy era
• Viable Singularity-Free f(R) Gravity Without a Cosmological Constant
• Cosmological evolution in R^2 gravity
• Generalized Brans-Dicke theories
• Some aspects of generalized modified gravity models
• Delicate f(R) gravity models with disappearing cosmological constant and observational constraints on the model parameters
• Dynamics of the anisotropic Kantowsky-Sachs geometries in $R^n$ gravity
• Equilibrium thermodynamics in modified gravitational theories
• The bounce universe history from unimodular $F(R)$ gravity
• Cosmology Based on f(R) Gravity Admits 1 eV Sterile Neutrinos
• Thermodynamics in $f(R)$ gravity in the Palatini formalism
• Trace-anomaly driven inflation in modified gravity and the BICEP2 result
• Spectrum of Primordial Gravitational Waves in Modified Gravities: A Short Overview
• Matter instabilities in general Gauss-Bonnet gravity
• $f(R)$ gravity constrained by PPN parameters and stochastic background of gravitational waves
• A class of static spherically symmetric solutions in $f(Q)$-gravity
• Cosmological Evolution in f(R,T) theory with Collisional Matter
• Rational approximations of $f(R)$ cosmography through Padé polynomials
• Large-scale structure phenomenology of viable Horndeski theories
• Gödel-type universes in f(R) gravity
• Dawn of the dark: unified dark sectors and the EDGES Cosmic Dawn 21-cm signal
• Consistency relation for $R^p$ inflation
• Black hole entropy in modified gravity models
• Viable Mimetic Completion of Unified Inflation-Dark Energy Evolution in Modified Gravity
• The effect of modified gravity on weak lensing
• Unimodular $F(R)$ Gravity
• Chameleon dark energy models with characteristic signatures
• The Jebsen-Birkhoff theorem in alternative gravity
• Quasinormal Modes of Black holes in $f(Q)$ gravity
• Modified Gravity with a Non-minimal Gravitational Coupling to Matter
• Remarks on generalized Gauss-Bonnet dark energy
• Reconstruction of the Dark Energy equation of state
• Cosmological observational constraints on the power law $f(Q)$ type modified gravity theory
• A quantitative analysis of singular inflation with scalar-tensor and modified gravity
• Kinematic model-independent reconstruction of Palatini $f(R)$ cosmology
• Singular fate of the universe in modified theories of gravity
• New interactions in the dark sector mediated by dark energy
• Cosmological constraints on extended Galileon models
• Complete dark energy scenario in $f(Q)$ gravity
• Connecting early and late universe by $f(R)$ gravity
• Explosive phenomena in modified gravity
• Constraining $f(R)$ gravity models with disappearing cosmological constant
• Cosmological equivalence between the Finsler-Randers space-time and the DGP gravity model
• One-loop effective action for non-local modified Gauss-Bonnet gravity in de Sitter space
• Stability analysis for cosmological models in $f(R)$ gravity using dynamical system analysis
• The effective field theory of inflation/dark energy and the Horndeski theory
• Chameleon scalar fields in relativistic gravitational backgrounds
• Modified Supergravity and Early Universe: the Meeting Point of Cosmology and High-Energy Physics
• Constrained $f(Q,T)$ gravity accelerating cosmological model and its dynamical system analysis
• Constraints on general second-order scalar-tensor models from gravitational Cherenkov radiation
• Dark energy scenario consistent with GW170817 in theories beyond Horndeski gravity
• Cosmology in generalized Horndeski theories with second-order equations of motion
• From a Bounce to the Dark Energy Era with $F(R)$ Gravity
• Revisiting chameleon gravity - thin-shells and no-shells with appropriate boundary conditions
• Constraints on f(R) theory and Galileons from the latest data of galaxy redshift surveys
• Accelerating expansion of the universe in modified symmetric teleparallel gravity
• F(R) gravity's rainbow and its Einstein counterpart
• Generic feature of future crossing of phantom divide in viable $f(R)$ gravity models
• LRS Bianchi type-I cosmological model with constant deceleration parameter in $f(R,T)$ gravity
• The instabilities and (anti)-evaporation of Schwarzschild-de Sitter black holes in modified gravity
• Importance of torsion and invariant volumes in Palatini theories of gravity
• Chasing the non-linear evolution of matter power spectrum with numerical resummation method: solution of closure equations
• Field equations and cosmology for a class of nonlocal metric models of MOND
• Dark energy: investigation and modeling
• A special class of solutions in $F(R)$-gravity
• The cosmology in f(R,T) gravity without dark energy
• Cosmological perturbations and observational constraints on nonlocal massive gravity
• Disformal invariance of cosmological perturbations in a generalized class of Horndeski theories
• A note on the dynamical features for the extended $f(P)$ cubic gravity
• Effects of Spatial Curvature on the $f(R)$ Gravity Phase Space: no Inflationary Attractor?
• A conservative energy-momentum tensor in the $f(R,T)$ gravity and its implications for the phenomenology of neutron stars
• $f(R,T)=f(R)+\lambda T$ gravity models as alternatives to cosmic acceleration
• Cosmological perturbation in f(R,G) theories with a perfect fluid
• Oscillations of the F(R) dark energy in the accelerating universe
• Cosmology in beyond-generalized Proca theories
• Generation of spherically symmetric metrics in $f\left(R\right)$ gravity
• Future Oscillations around Phantom Divide in f(R) Gravity
• Practical solutions for perturbed f(R) gravity
• $\Lambda$CDM Bounce Cosmology without $\Lambda$CDM: the case of modified gravity
• A data-driven Reconstruction of Horndeski gravity via the Gaussian processes
• Neutron stars in $f(R)$ gravity and scalar-tensor theories
• Thermodynamical aspects of Bianchi type-I Universe in quadratic form of $f\left(Q\right)$ gravity and observational constraints
• Superbounce and Loop Quantum Cosmology Ekpyrosis from Modified Gravity
• Chirality of Gravitational Waves in Chern-Simons $f(R)$ Gravity Cosmology
• Reheating after f(R) inflation
• Standard Cosmological Evolution in a Wide Range of f(R) Models
• Observational constraints on non-minimally coupled Galileon model
• Black hole perturbation in parity violating gravitational theories
• Projected Constraints on Modified Gravity Cosmologies from 21 cm Intensity Mapping
• Anisotropic quark stars in $f(R)=R^{1+\epsilon }$ gravity
• Gauss-Bonnet Chameleon Mechanism of Dark Energy
• Testing logarithmic corrections on $R^2$-exponential gravity by observational data
• f(R) Gravity and its Cosmological Implications
• Non-minimal geometry-matter couplings in Weyl-Cartan space-times: $f(R,T,Q,T_m)$ gravity
• Observational signatures of the theories beyond Horndeski
• Kinetic Axion $F(R)$ Gravity Inflation
• Characterizing the linear growth rate of cosmological density perturbations in an f(R) model
• Constraint on reheating after f(R) inflation from gravitational waves
• Qualitative analysis of Kantowski-Sachs metric in a generic class of $f(R)$ models
• Black hole perturbation in nondynamical and dynamical Chern-Simons gravity
• Spherical Symmetric Solution in f(R) Model Around Charged Black Hole
• The growth factor of matter perturbations in an f(R) gravity
• Position and frequency shifts induced by massive modes of the gravitational wave background in alternative gravity
• Searching for scalar gravitational interactions in current and future cosmological data
• Testing for dynamical dark energy models with redshift-space distortions
• Halo Scale Predictions of Symmetron Modified Gravity
• Thermodynamic topology of topological black hole in $F(R)$-ModMax gravity's rainbow
• Towards a solution of the cosmological constant problem
• Jeans Instability in Classical and Modified Gravity
• Effective field theory of modified gravity on the spherically symmetric background: leading order dynamics and the odd-type perturbations
• Matter Power Spectra in Viable $f(R)$ Gravity Models with Massive Neutrinos
• Exploring late-time cosmic acceleration: A study of a linear $f(T)$ cosmological model using observational data
• Energy conditions for a $(WRS{)}_4$ spacetime in $F(R)$-gravity
• Comments on "Solar System constraints to general f(R) gravity"
• Jeans Analysis of Bok globules in $f(R)$ gravity
• Constraints on massive vector dark energy models from integrated Sachs-Wolfe-galaxy cross-correlations
• f(R) as a dark energy fluid
• Curvature Singularities from Gravitational Contraction in f(R) Gravity
• Late-Time Cosmology of Scalar-Coupled $f(R,\mathcal{G})$ Gravity
• Cosmological evolution, future singularities, Little Rip and Pseudo-Rip in viable f(R) theories and their scalar-tensor counterpart
• Homogeneous cosmologies in generalized modified gravity
• Probing $f(R)$ cosmology with sterile neutrinos via measurements of scale-dependent growth rate of structure
• Modified gravity emerging from thermodynamics and holographic principle
• Dark Energy and Equation of State Oscillations with Collisional Matter Fluid in Exponential Modified Gravity
• Cosmological dynamics of $f(R)$ gravity scalar degree of freedom in Einstein frame
• Statefinder Analysis of Symmetric Teleparallel Cosmology
• Second-order matter density perturbations and skewness in scalar-tensor modified gravity models
• Dark energy in scalar-vector-tensor theories
• Formalizing Anisotropic Inflation in Modified Gravity
• Modified Gravity: the CMB, Weak Lensing and General Parameterisations
• Cosmic Dynamics in $F(R,\varphi )$ Gravity
• Solving the $H_0$ tension in $f(T)$ Gravity through Bayesian Machine Learning
• How delicate are the $f(R)$ gravity models with disappearing cosmological constant?
• The dynamics of matter bounce cosmology in Weyl-type $f(Q,T)$ gravity
• Cosmography and large scale structure by f(R) gravity: new results
• Estimation of Cosmological Parameters, Stability Analysis and Energy Conditions in Viable Modified Gravity
• Parameterizing scalar-tensor theories for cosmological probes
• Bouncing Universe and phantom crossing in Modified Gravity and its reconstruction
• Dark energy survivals in massive gravity after GW170817: SO(3) invariant
• Anisotropic singularities in modified gravity models
• Lunar Laser Ranging constraints on nonminimally coupled dark energy and standard sirens
• Non-singular modified gravity: the unification of the inflation, dark energy and dark mater
• An Accurate Fitting Function For Scale-dependent Growth Rate in Hu-Sawicki $f(R)$ Gravity
• New probe of gravity: strongly lensed gravitational wave multi-messenger approach
• Observational Bounds on Modified Gravity Models
• Modified arctan-gravity model mimicking a cosmological constant
• Aspects of Late-time Evolution in Mimetic $F(R)$ Gravity
• Spatial Curvature in $f(R)$ Gravity
• Extended galactic rotational velocity profiles in $f(R)$ gravity background
• Casimir Dark Energy, Stabilization of the Extra Dimensions and Gauss-Bonnet Term
• Generic f(R) theories and classicality of their scalarons
• Exploring Universe acceleration through observational constraints via Hubble parameter reconstruction
• Observational constraints on a generalized equation of state model
• Joint reconstructions of growth and expansion histories from stage-IV surveys with minimal assumptions. II. Modified gravity and massive neutrinos
• Cosmological acceleration
• Energy Bounds in $f(R,G)$ Gravity with Anisotropic Background
• Curvature Oscillations in Modified Gravity and High Energy Cosmic Rays
• Logarithmic corrected $F(R)$ gravity in the light of Planck 2015
• $f(R)$ gravity modifications: from the action to the data
• Early Modified Gravity: Implications for Cosmology
• Cosmological disformal transformations to the Einstein frame and gravitational couplings with matter perturbations
• Loop Quantum Cosmology Matter Bounce Reconstruction from $F(R)$ Gravity Using an Auxiliary Field
• Superbounce and Loop Quantum Ekpyrotic Cosmologies from Modified Gravity: $F(R)$, $F(G)$ and $F(T)$ Theories
• Hydrostatic equilibrium configurations of neutron stars in a non-minimal geometry-matter coupling theory of gravity
• Extended Cosmology in Palatini f(R)-theories
• Modified gravity with an exponential function of curvature
• Standard Cosmological Evolution in f(R) Model to Kaluza Klein Cosmology
• On the Emergence of Accelerating Cosmic Expansion in f(R) Theories of Gravity
• (2+1)-dimensional solutions in $F(R)$ gravity
• Late Time Cosmological Evolution in f(R) theories with Ordinary and Collisional Matter
• Spherically Symmetric Solutions in F(R) Gravity and Gravitational Repulsion
• Tabletop potentials for inflation from $f(R)$ gravity
• Restricting Fourth Order Gravity via Cosmology
• On exponential modified gravity
• Moment of inertia and compactness of quark stars within the context of $f(R,T,L_m)$ gravity
• Stability and Space Phase Analysis in f(R) theory with Generalized Exponential model
• Vector dark energy models with quadratic terms in the Maxwell tensor derivatives
• Testing Alternative Theories of Dark Matter with the CMB
• $f(T)$ non-linear massive gravity and the cosmic acceleration
• Vacuum Solution of a Linear Red-Shift Based Correction in $f(R)$ Gravity
• Holographic Dark Energy Like in $f(R)$ Gravity
• Birkhoff's Theorem in f(T) Gravity up to the Perturbative Order
• Constraint propagation equations of the 3+1 decomposition of f(R) gravity
• Structure formation in $f(R)$ gravity: A distinguishing probe between the dark energy and modified gravity
• Constraints on Modified Gravity from ACT and SPT
• Bounding $f(R)$ gravity by particle production rate
• Small Cosmological Constant from Running Gravitational Coupling
• An updated analysis of two classes of f(R) theories of gravity
• Particle Production in f(R) Gravity during Structure Formation
• Cosmology based on $f(R)$ gravity with $\mathcal{O}(1)$ eV sterile neutrino
• On the supersymmetrization of inflation in f(R) gravity
• The Music of the Aetherwave - B-mode Polarization in Einstein-Aether Theory
• Problems with Modified Theories of Gravity, as Alternatives to Dark Energy
• Inflation without self-reproduction in $F(R)$ gravity
• Rescaled Einstein-Hilbert Gravity: Inflation and the Swampland Criteria
• Equivalence Principle (EP) and Solar System Constraints on $R(1\pm \epsilon \ln (\frac{R}{R_c}))$ model of Gravity
• Testing gravity with halo density profiles observed through gravitational lensing
• Looking for empty topological wormhole spacetimes in $F(R)$-modified gravity
• Low-energy modified gravity signatures on the large-scale structures
• An analytic calculation of the growth index for $f(R)$ dark energy model
• Non-minimal coupling influence on the deviation from de Sitter cosmological expansion
• Bounds from ISW-galaxy cross-correlations on generalized covariant Galileon models
• Withholding Potentials, Absence of Ghosts and Relationship between Minimal Dilatonic Gravity and f(R) Theories
• Maxwell extension of $f(R)$ gravity
• f(T) Quantum Cosmology
• Fundamental energy scale of the thick brane in mimetic gravity
• Swampland Criteria and Constraints on Inflation in a $f(R,T)$ Gravity Theory
• Anisotropic Universe in $f(\mathcal{G},\text{T})$ Gravity
• Halting eternal acceleration with an effective negative cosmological constant
• Instability of gravitational baryogenesis with fermions
• Viscous fluid cosmology in symmetric teleparallel gravity
• Bulk viscous fluid in symmetric teleparallel cosmology: theory versus experiment
• Stability analysis in Modified Non-Local Gravity
• Cosmological back-reaction in modified gravity and its implications for dark energy
• Late-time Cosmology of scalar field assisted $f(\mathcal{G})$ gravity
• Cosmological constant in F(R) supergravity
• Square-Root parametrization of dark energy in $f(Q)$ cosmology
• The universe is accelerating. Do we need a new mass scale?
• Reconstruction of the singularity-free $f(\mathcal{R})$ gravity via Raychaudhuri equations
• Testing theories of Gravity and Supergravity with inflation and observations of the cosmic microwave background
• Parametrizing growth in dark energy and modified gravity models
• Constraints on a $f(R)$ gravity dark energy model with early scaling evolution
• $\gamma$ gravity: Steepness control
• $R^2$ Gravity Effects on the Kinetic Axion Phase Space
• Kinetic Axion Dark Matter in String Corrected $f(R)$ Gravity
• On the Higgs-like Quintessence for Dark Energy
• Dark Energy in Modified Supergravity
• Reconstructing modified gravity with holographic vacuum energy density
• N-body Simulations of $\gamma$ Gravity
• Cosmological evolution of generalized non-local gravity
• Gravitational instability in oscillating background
• A new $F(R)$-gravity model
• A new test of gravity -- I: Introduction to the method
• Constrained transit cosmological models in $f(R,L_m,T)$-gravity
• Modeling of non-rotating neutron stars in minimal dilatonic gravity
• Observational constraint on dynamical evolution of dark energy
• On Friedmann-Lema\^ıtre-Robertson-Walker cosmologies in non-standard gravity
• Dynamical stability of Minkowski space in higher order gravity
• Scalar field dark energy: Insights into cosmological evolution and black hole accretion
• Cosmological constraints on $R^2$-corrected Appleby-Battye model
• Qualitative evolution in f(R) cosmologies
• Local gravity test of unified models of inflation and dark energy in $f(R)$ gravity
• Curvature Singularity in f(R) Theories of Gravity
• Notes on Born-Infeld-like modified gravity
• Investigating the Possibility of a Turning Point in the Dark Energy Equation of State
• Investigation of Bouncing Universe and Phantom Crossing in Modified Gravity Coupled with Weyl Tensor and its Reconstruction
• Consistency of $f(R)$ gravity models around solar polytropes
• Impact of dark energy on the equation of state in light of the latest cosmological data
• High frequency limit for gravitational perturbations of cosmological models in modified gravity theories
• Non-linear density-velocity dynamics in $f(R)$ gravity from spherical collapse
• Viability of Arctan Model of f(R) Gravity for Late-time Cosmology
• Einstein Spaces Modeling Nonminimal Modified Gravity
• Phantom Mimicry on the Normal Branch of a DGP-inspired Braneworld Scenario with Curvature Effect
• Viability of general relativity and modified gravity cosmologies using high-redshift cosmic probes
• Thermodynamics of $f(R)$ Theories of Gravity
• Modified gravity with disappearing cosmological constant
• Generalized modified gravity models: the stability issue
• Impulsive gravitational waves of massless particles in extended theories of gravity
• Realizing the phantom-divide crossing with vector and scalar fields
• Logarithmic gravity model
• On the Thermodynamical Black Hole Stability in the Space-time of a Global Monopole in $f(R)$-Gravity
• Is scalar-tensor gravity consistent with polytropic stellar models?
• Equation of state and singularities in FLRW cosmological models
• f(R) in Holographic and Agegraphic Dark Energy Models and the Generalized Uncertainty Principle
• A new model of arcsin-gravity
• Behavior of $F(R)$ gravity around a crossing of the phantom divide
• Energy Conditions in $f(P)$ Gravity
• Born - Infeld-type modified gravity
• Constraining modified growth patterns with tomographic surveys
• Accelerating and decelerating cosmology from spinor and scalar fields non-minimally coupled with f(R) gravity
• A New f(R) Model in the Light of Local Gravity Test and Late-time Cosmology
• Characterising Dark Energy through supernovae
• Modified Gravity in the framework of holographic dark energy
• Off-diagonal solutions in Einsteingravity modeling f(R) gravity and dynamical darkenergy vs Lambda CDM cosmology
• A Viable model for modified gravity
• Revisited apparent horizon entropy and GSL in modified gravity
• Viable f(R) gravity and future cosmological evolution
• Dynamics of Solutions of $f(R)$ Theory
• $\Lambda$CDM without cosmological constant
• Cosmic expansion history analysis with Hubble parametrization in $Q^n$ gravity
• Preventing Curvature Singularities in $f(R)$ Dark Energy Models
• Implications of $f(R)$ gravity on late-time cosmic structure growth through a complete description of density perturbations
• Some Classes of Interacting Two-Fluid Model of the Expanding Universe
• Cosmological solutions of Tensor-Vector theories of gravity with varying the space-time-matter coupling constant
• Theoretical and observational constraints on early dark energy in $F(R)$ gravity
• Constraining $f(R)$ model through spectral indices and reheating temperature
• Cosmological constraints on viable $f(R)$ models using weak lensing
• Quantum cosmology in teleparallel gravity with a boundary term
• Accelerating electrically charged ModMax black hole solutions in $F(R)$ gravity
• Effective spacetime geometry of graviton condensates in $f(\mathcal{R})$ gravity
• Globally Stable Dark Energy in $F(R)$ Gravity
• Marked statistics across the cosmic web: Environmental dependent clustering in modified gravity simulations
• Some Classes of Gravitational Shock Waves from Higher Order Theories of Gravity
• Domain wall in $f(R)$ gravity
• Exploring the parameter space of modified supergravity for double inflation and primordial black hole formation
• Perturbations In Some Dark Energy Models