The Cosmology of Generalized Modified Gravity Models

Abstract

We consider general curvature-invariant modifications of the Einstein-Hilbert action that become important only in regions of extremely low space-time curvature. We investigate the far future evolution of the universe in such models, examining the possibilities for cosmic acceleration and other ultimate destinies. The models generically possess de Sitter space as an unstable solution and exhibit an interesting set of attractor solutions which, in some cases, provide alternatives to dark energy models.

27 pages, 7 figures, uses RevTeX, minor revisions, references added, to appear in PRD

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Cited by in corpus (444)

• Dynamics of dark energy
• 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
• Extended Theories of Gravity
• f(T) teleparallel gravity and cosmology
• Beyond the Cosmological Standard Model
• Theoretical Aspects of Massive Gravity
• Cosmology and fundamental physics with the Euclid satellite
• Conditions for the cosmological viability of f(R) dark energy models
• Investigating the Ultraviolet Properties of Gravity with a Wilsonian Renormalization Group Equation
• Do consistent $F(R)$ models mimic General Relativity plus $\Lambda$?
• Avoiding Dark Energy with 1/R Modifications of Gravity
• Bouncing Universes in String-inspired Gravity
• Dynamical systems applied to cosmology: dark energy and modified gravity
• Testing General Relativity in Cosmology
• Observational signatures of f(R) dark energy models that satisfy cosmological and local gravity constraints
• Alternatives to Dark Matter and Dark Energy
• Maximal freedom at minimum cost: linear large-scale structure in general modifications of gravity
• A discriminating probe of gravity at cosmological scales
• Post-Newtonian constraints on f(R) cosmologies in Palatini formalism
• Approaches to Understanding Cosmic Acceleration
• Post-Newtonian constraints on f(R) cosmologies in metric formalism
• Dark Energy Dominance and Cosmic Acceleration in First Order Formalism
• Construction of cosmologically viable f(G) gravity models
• Crossing the Phantom Divide: Theoretical Implications and Observational Status
• Covariant conservation of energy momentum in modified gravities
• Spherically symmetric solutions of modified field equations in f(R) theories of gravity
• The Power of General Relativity
• Large Scale Structure as a Probe of Gravitational Slip
• Solar System constraints to general f(R) gravity
• f(R, T, R_μνT^μν) gravity phenomenology and ΛCDM universe
• The Cosmology of f(R) Gravity in the Metric Variational Approach
• The Cosmology of Modified Gauss-Bonnet Gravity
• Dynamics of Linear Perturbations in f(R) Gravity
• Limit to General Relativity in f(R) theories of gravity
• Cosmological Tests of Gravity
• Cosmological dynamics of R^n gravity
• Robust Dark Energy Constraints from Supernovae, Galaxy Clustering, and Three-Year Wilkinson Microwave Anisotropy Probe Observations
• Energy conditions in f(R)-gravity
• A kinematical approach to dark energy studies
• Modified gravity models of dark energy
• Phantom crossing, equation-of-state singularities, and local gravity constraints in f(R) models
• Holographic Superconductors with Higher Curvature Corrections
• Observational Constraints on Dark Energy and Cosmic Curvature
• Accurate halo-model matter power spectra with dark energy, massive neutrinos and modified gravitational forces
• Cosmic dynamics in the era of Extremely Large Telescopes
• Mimetic gravity: a review of recent developments and applications to cosmology and astrophysics
• Observational Tests of Modified Gravity
• ECOSMOG: An Efficient Code for Simulating Modified Gravity
• Matter instability in modified gravity
• Conditions for the cosmological viability of the most general scalar-tensor theories and their applications to extended Galileon dark energy models
• The (pseudo)issue of the conformal frame revisited
• Effective gravitational couplings for cosmological perturbations in the most general scalar-tensor theories with second-order field equations
• Probing Cosmic Acceleration Beyond the Equation of State: Distinguishing between Dark Energy and Modified Gravity Models
• A f(R) gravity without cosmological constant
• Equivalence Principle Implications of Modified Gravity Models
• A Unified Description of Screened Modified Gravity
• Static Spherically Symmetric Wormholes in $f(R,T)$ Gravity
• Cosmological constraints on f(R) gravity theories within the Palatini approach
• Generalized energy conditions in Extended Theories of Gravity
• Testing Gravity Against Early Time Integrated Sachs-Wolfe Effect
• "Expansion" around the vacuum equation of state - sudden future singularities and asymptotic behavior
• Separating Dark Physics from Physical Darkness: Minimalist Modified Gravity vs. Dark Energy
• Testing Gravity using Cosmic Voids
• Boundary Terms, Variational Principles and Higher Derivative Modified Gravity
• Uncorrelated Measurements of the Cosmic Expansion History and Dark Energy from Supernovae
• hi_class: Horndeski in the Cosmic Linear Anisotropy Solving System
• Halos and Voids in f(R) Gravity
• f(R) cosmology by Noether's symmetry
• Generalized Galileon cosmology
• f(R) gravity theories in Palatini formalism: cosmological dynamics and observational constraints
• Weak Lensing Probes of Modified Gravity
• Generalized Global Defect Solutions
• On the stability of the cosmological solutions in f(R,G) gravity
• Constraints on scalar-tensor models of dark energy from observational and local gravity tests
• DESI 2024: Reconstructing Dark Energy using Crossing Statistics with DESI DR1 BAO data
• Static spherically symmetric perfect fluid solutions in $f(R)$ theories of gravity
• Gravitational collapse in f(R) theories
• Ghosts, Instabilities, and Superluminal Propagation in Modified Gravity Models
• Modified-Source Gravity and Cosmological Structure Formation
• Solar system constraints on f(G) gravity models
• Energy Conditions Constraints and Stability of Power Law Solutions in f(R,T) Gravity
• On the evolution of density perturbations in f(R) theories of gravity
• Observational constraints on Galileon cosmology
• Constraints on a New Post-General Relativity Cosmological Parameter
• Viability of f(R) Theories with Additional Powers of Curvature
• The nonlinear matter and velocity power spectra in f(R) gravity
• Nonlinear structure formation in the Cubic Galileon gravity model
• Matter perturbations in Galileon cosmology
• Cosmological perturbations in Massive Gravity and the Higuchi bound
• Two-Field Quintom Models in the w-w' Plane
• 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
• Matter density perturbations in modified gravity models with arbitrary coupling between matter and geometry
• Massive, massless and ghost modes of gravitational waves from higher-order gravity
• Aspects of general higher-order gravities
• Experimental Tests of General Relativity: Recent Progress and Future Directions
• Linear perturbations in Galileon gravity models
• Constraining Inverse Curvature Gravity with Supernovae
• The Existence of Godel, Einstein and de Sitter Universes
• On the Stability of a class of Modified Gravitational Models
• Cosmological Effects of Nonlinear Electrodynamics
• Exactly Solvable SFT Inspired Phantom Model
• Stability of Schwarzschild-like solutions in f(R,G) gravity models
• Selected topics in scalar-tensor theories and beyond
• Higher order gravity theories and their black hole solutions
• Lovelock Gravity at the Crossroads of Palatini and Metric Formulations
• f(R) Gravity with Torsion: The Metric-Affine Approach
• Further Exact Cosmological Solutions to Higher-Order Gravity Theories
• On Wormhole Throats in $f(R)$ Gravity Theory
• The behavior of $f(R)$ gravity in the solar system, galaxies and clusters
• f(R)-Brane
• Vainshtein mechanism in second-order scalar-tensor theories
• The Cosmology of Ricci-Tensor-Squared Gravity in the Palatini Variational Approach
• Ghost Constraints on Modified Gravity
• Voids as a Precision Probe of Dark Energy
• Modified gravity and the stability of de Sitter space
• Spherically Symmetric Solutions to Fourth-Order Theories of Gravity
• Can f(R) Modified Gravity Theories Mimic a LCDM Cosmology?
• On the co-existence of matter dominated and accelerating solutions in f(G)-gravity
• Cross-correlation of 2MASS and WMAP3: Implications for the Integrated Sachs-Wolfe effect
• Anisotropic Universe Models with Perfect Fluid and Scalar Field in f(R,T) Gravity
• A new perspective on Dark Energy modeling via Genetic Algorithms
• Some aspects of generalized modified gravity models
• Dark energy transition between quintessence and phantom regimes - an equation of state analysis
• Reconstruction of the Scalar-Tensor Lagrangian from a LCDM Background and Noether Symmetry
• Constraints on f(R) Cosmology in the Palatini Formalism
• Existence of stable wormholes on a noncommutative-geometric background in modified gravity
• Vacuum structure for scalar cosmological perturbations in Modified Gravity Models
• An Extended Excursion Set Approach to Structure Formation in Chameleon Models
• CMB and Matter Power Spectra of Early f(R) Cosmology in Palatini Formalism
• Tests of Gravity from Imaging and Spectroscopic Surveys
• Testing the theory of gravity with DESI: estimators, predictions and simulation requirements
• Modified Gravity Tomography
• Matter instabilities in general Gauss-Bonnet gravity
• On the Newtonian limit of Generalized Modified Gravity Models
• Vainshtein regime in Scalar-Tensor gravity: constraints on DHOST theories
• Lookback time as a test for brane cosmology
• Braneworld solutions for F(R) models with non-constant curvature
• Eddington-Born-Infeld action for dark energy and dark matter
• Accelerating Universe in Modified Theories of Gravity
• Spherical Collapse in f(R) Gravity
• The reliability of the AIC method in Cosmological Model Selection
• Energy conditions and current acceleration of the universe
• Statefinder diagnostic and stability of modified gravity consistent with holographic and new agegraphic dark energy
• Charged wormholes in f(R,T) extended theory of gravity
• Cosmological expansion and the uniqueness of gravitational action
• Consistent long distance modification of gravity from inverse powers of the curvature
• Accelerated Cosmological Models in Modified Gravity tested by distant Supernovae SNIa data
• Bouncing inflation in nonlinear $R^2+R^4$ gravitational model
• The Parameterised Post-Newtonian Limit of Fourth-Order Theories of Gravity
• Curvature driven acceleration : a utopia or a reality ?
• Ghosts in pure and hybrid formalisms of gravity theories: a unified analysis
• In search of the dark matter dark energy interaction: a kinematic approach
• Measuring the Integrated Sachs-Wolfe Effect
• New interactions in the dark sector mediated by dark energy
• Relaxing Nucleosynthesis Constraints on Brans-Dicke Theories
• Connecting early and late universe by $f(R)$ gravity
• Energy-momentum complexes in f(R) theories of gravity
• Super-acceleration on the Brane by Energy Flow from the Bulk
• Noether Charge and Black Hole Entropy in Modified Theories of Gravity
• Charged rotating black holes coupled with nonlinear electrodynamics Maxwell field in the mimetic gravity
• KiDS+GAMA: Constraints on Horndeski gravity from combined large-scale structure probes
• Microscopic and Macroscopic Behaviors of Palatini Modified Gravity Theories
• Cosmology of the selfaccelerating third order Galileon
• Traversable wormholes in the extended teleparallel theory of gravity with matter coupling
• Acceleration of the universe: a reconstruction of the effective equation of state
• Stellar configurations in f(R) theories of gravity
• Auxiliary fields representation for modified gravity models
• Remarks on the formulation of the cosmological constant/dark energy problems
• Nonlocal Gravity and Structure in the Universe
• Testing the quasi-static approximation in $f(R)$ gravity simulations
• Dark Energy Constraints from Baryon Acoustic Oscillations
• The Integrated Sachs-Wolfe effect in $f(R)$ gravity
• Metric gravity theories and cosmology. I. Physical interpretation and viability
• Fab 5: Noncanonical Kinetic Gravity, Self Tuning, and Cosmic Acceleration
• Consistency of $f(R)=\sqrt{R^2-R_0^2}$ Gravity with the Cosmological Observations in Palatini Formalism
• Newton's constant in f(R,R_{μν}R^{μν},\Box R) theories of gravity and constraints from BBN
• Perturbative aspects and conformal solutions of F(R) gravity
• Collider Signals of Gravitational Fixed Points
• Starobinsky cosmological model in Palatini formalism
• Minimum main sequence mass in quadratic Palatini $f(\mathcal{R})$ gravity
• Testing (modified) gravity with 3D and tomographic cosmic shear
• Phantom without UV pathology
• An alternative explanation of the conflict between 1/R gravity and solar system tests
• Horizon Entropy in Modified Gravity
• Dark energy: investigation and modeling
• Black hole solutions in f(R) gravity coupled with non-linear Yang-Mills field
• Hierarchical clustering in chameleon $f(R)$ gravity
• Planck priors for dark energy surveys
• Dynamically avoiding fine-tuning the cosmological constant: the "Relaxed Universe"
• Multi-Scalar-Tensor Equivalents for Modified Gravitational Actions
• Higher-order theories of gravity: diagnosis, extraction and reformulation via non-metric extra degrees of freedom
• Cosmological perturbation in f(R,G) theories with a perfect fluid
• Exploring the liminality: properties of haloes and subhaloes in borderline $f(R)$ gravity
• Non-singular models of universes in teleparallel theories
• Does the Big Rip survive quantization?
• Stability of Anisotropic Stellar Filaments
• Non-minimal kinetic coupling and the phenomenology of dark energy
• On The Existence Of Anisotropic Cosmological Models In Higher-Order Theories Of Gravity
• Non-minimal Maxwell-Modified Gauss-Bonnet Cosmologies: Inflation and Dark Energy
• The Newtonian limit of metric gravity theories with quadratic Lagrangians
• Generalized second law of thermodynamics in scalar-tensor gravity
• On stability of a neutron star system in Palatini gravity
• Baryon effects on void statistics in the EAGLE simulation
• Cosmological Perturbations in Elastic Dark Energy Models
• Observational constraints on non-minimally coupled Galileon model
• Standard Cosmological Evolution in a Wide Range of f(R) Models
• A Future Test of Gravitation Using Galaxy Cluster Velocities
• The signature of dark energy perturbations in galaxy cluster surveys
• Anisotropic stress and stability in modified gravity models
• Cosmic acceleration and crossing of $\omega =-1$ in non-minimal modified Gauss-Bonnet gravity
• Renormalization group scale-setting from the action - a road to modified gravity theories
• Fine Tuning Free Paradigm of Two Measures Theory: K-Essence, Absence of Initial Singularity of the Curvature and Inflation with Graceful Exit to Zero Cosmological Constant State
• Galaxy-CMB Cross-Correlation as a Probe of Alternative Models of Gravity
• The accelerating universe and a limiting curvature proposal
• Relaxing a large cosmological constant
• Late-time constraints on modified Gauss-Bonnet cosmology
• Area metric gravity and accelerating cosmology
• Electromagnetic Asymmetry, Relegation of Curvature Singularities of Charged Black Holes, and Cosmological Equations of State in View of the Born--Infeld Theory
• No-go theorem for inflation in Ricci-inverse gravity
• Polytropic stars in Palatini gravity
• Confronting the relaxation mechanism for a large cosmological constant with observations
• Qualitative analysis of Kantowski-Sachs metric in a generic class of $f(R)$ models
• Cosmology of F(R) nonlinear massive gravity
• Spherical Symmetric Solution in f(R) Model Around Charged Black Hole
• Neutron stars in generalized f(R) gravity
• Early evolutionary tracks of low-mass stellar objects in modified gravity
• Rapid simulation rescaling from standard to modified gravity models
• Cosmological perturbations in Gauss-Bonnet quasi-dilaton massive gravity
• The Relaxed Universe: towards solving the cosmological constant problem dynamically from an effective action functional of gravity
• Unsuccessful cosmology with Modified Gravity Models
• Cosmological entropy and generalized second law of thermodynamics in $F(R,G)$ theory of gravity
• Inflationary cosmology with Chaplygin gas in Palatini formalism
• No-go theorem for inflation in an extended Ricci-inverse gravity model
• Reconstruction and Stability Analysis of Some Cosmological Bouncing Solutions in $F(\mathcal{R},T)$ Theory
• On the current status of Modified Gravity
• Three-Point Correlations in f(R) Models of Gravity
• Constraining Newtonian stellar configurations in f(R) theories of gravity
• Cluster gas fraction as a test of gravity
• Acceleration of the Universe via f(R) Gravities and The Stability of Extra Dimensions
• f(R) Gravities à la Brans-Dicke
• Modified gravity, Dark Energy and MOND
• Fermi gas and modified gravity
• Ghost dark energy in $f(R)$ model of gravity
• Homogeneous cosmologies in generalized modified gravity
• Can we bypass no-go theorem for Ricci-inverse Gravity?
• Stealth Acceleration and Modified Gravity
• Cosmological evolution, future singularities, Little Rip and Pseudo-Rip in viable f(R) theories and their scalar-tensor counterpart
• Lithium abundance is a gravitational model dependent quantity
• Cosmological data analysis of f(R) gravity models
• Crossing the phantom divide in brane cosmology with curvature corrections and brane-bulk energy transfer
• The dynamical viability of scalar-tensor gravity theories
• Revealing modified gravity signal in matter and halo hierarchical clustering
• Testing General Relativity on cosmological scales at redshift z ~ 1.5 with quasar and CMB lensing
• Cosmological constraints on a classical limit of quantum gravity
• Higher Powers in Gravitation
• Cosmological bounces in spatially flat FRW spacetimes in metric f(R) gravity
• Anisotropic stellar models admitting conformal motion
• Testing f(R) gravity with the simulated data of gravitational waves from the Einstein Telescope
• The phase-space of generalized Gauss-Bonnet dark energy
• Metric-affine gravity effects on terrestrial (exo-)planets profiles
• Real- and redshift-space halo clustering in $f(R)$ cosmologies
• Exact Friedmann Solutions in Higher-Order Gravity Theories
• Astronomical constraints on some long-range models of modified gravity
• The WiggleZ Dark Energy Survey: constraining the evolution of Newton's constant using the growth rate of structure
• Generalized modified gravity with the second order acceleration equation
• Coincidence Problem in $f(R)$ Gravity Models
• Scalar mode propagation in modified gravity with a scalar field
• Equivalence between Horndeski and beyond Horndeski theories and imperfect fluids
• Exact spherically symmetric solutions in modified Gauss-Bonnet gravity from Noether symmetry approach
• Galaxy-galaxy weak gravitational lensing in $f(R)$ gravity
• f(R) gravity on non-linear scales: The post-Friedmann expansion and the vector potential
• Reconstruction of interaction rate in Holographic dark energy
• Extended Theories of Gravity with Generalized Energy Conditions
• Geometry for the accelerating universe
• Future dynamics in f(R) theories
• Quintessence and tachyon dark energy models with a constant equation of state parameter
• Observational Bounds on Modified Gravity Models
• Distinguishing general relativity and $f(R)$ gravity with the gravitational lensing Minkowski functionals
• Gödel-type solutions within the f(R,Q) gravity
• Jupiter and jovian (exo)-planets in Palatini $f(\bar{R})$ gravity
• Tension between SN and BAO: current status and future forecasts
• Nonlinearities in modified gravity cosmology I: signatures of modified gravity in the nonlinear matter power spectrum
• Signatures of Modified Gravity on the 21-cm Power Spectrum at Reionisation
• Standard Cosmological Evolution in f(R) Model to Kaluza Klein Cosmology
• Dynamical conditions and causal transport of dissipative spherical collapse in $f(R,T)$ gravity
• A Brief History of Curvature
• Phase-space of flat Friedmann-Robertson-Walker models with both a scalar field coupled to matter and radiation
• Mass Varying Neutrinos, Quintessence, and the Accelerating Expansion of the Universe
• Test of conformal gravity with astrophysical observations
• Perturbations in the relaxation mechanism for a large cosmological constant
• Prospects for Dark Energy Evolution: a Frequentist Multi-Probe Approach
• Breaking the cosmological background degeneracy by two-fluid perturbations in f(R) gravity
• Pseudo-redundant vacuum energy
• Baryogenesis after Hyperextended Inflation
• Friedmann equations from nonequilibrium thermodynamics of the Universe: A unified formulation for modified gravity
• Quantum vacuum effects as generalized f(R) gravity. Application to stars
• Inhomogeneous viscous fluids in FRW universe
• Geometric Proca with Matter in Metric-Palatini Gravity
• Accelerating Hilbert-Einstein universe without dynamic dark energy
• Future constraints on the Hu-Sawicki modified gravity scenario
• Cubic Derivative Interactions and Asymptotic Dynamics of the Galileon Vacuum
• Testing Alternative Theories of Dark Matter with the CMB
• Growth of perturbations in nonlocal gravity with non-$\Lambda$CDM background
• Late-time acceleration and inflation in a Poincaré gauge cosmological model
• Gravitational collapse in non-minimally coupled gravity: finite density singularities and the breaking of the no-hair theorem
• Observational tests of a two parameter power-law class modified gravity in Palatini formalism
• Static Spherically Symmetric Solution of (R +- μ^4/R) Gravity
• $f(R)$ gravity and Tsallis holographic dark energy
• Viscous dark fluid
• Conformal Transformations in Metric-Affine Gravity and Ghosts
• Holographic Dark Energy Like in $f(R)$ Gravity
• Note on the Gauss-Bonnet braneworld scenario
• Cosmological dynamics of magnetic Bianchi I in viable $f(R)$ models of gravity
• Lessons from $f(R,R_c^2,R_m^2,L_m)$ gravity: Smooth Gauss-Bonnet limit, energy-momentum conservation and nonminimal coupling
• Improving Dark Energy Constraints with High Redshift Type Ia Supernovae from CANDELS and CLASH
• A minimal set of invariants as a systematic approach to higher order gravity models
• Asymptotic Properties of a Supposedly Regular (Dirac-Born-Infeld) Modification of General Relativity
• The ground-state of General Relativity, Topological Theories and Dark Matter
• The dark side of curvature
• Environmental screening of dark matter haloes in $f(R)$ gravity
• Gravitational Collapse In Vaidya Space-time For Galileon Gravity Theory
• Stabilization of Linear Higher Derivative Gravity with Constraints
• Conformal entropy for generalised gravity theories as a consequence of horizon properties
• Dynamical systems analysis of the cubic galileon beyond the exponential potential and the cosmological analogue of the vDVZ discontinuity
• Isolating the decay rate of cosmological gravitational potential
• Problems with Modified Theories of Gravity, as Alternatives to Dark Energy
• The Palatini star: exact solutions of the modified Lane-Emden equation
• Dark sector evolution in Horndeski models
• Inflation in the general Poincaré gauge cosmology
• Supernova, baryon acoustic oscillations, and CMB surface distance constraints on f(G) higher order gravity models
• Modified Gravity: living without Birkhoff I. DGP
• Giant planet formation in Palatini gravity
• Quantum kinetic theory of Jeans instability in non-minimal matter-curvature coupling gravity
• Planetary seismology as a test of modified gravity proposals
• Shape of Dark Energy: Constraining Its Evolution with a General Parametrization
• A new approach to cosmological perturbations in f(R) models
• Parametrization for the Scale Dependent Growth in Modified Gravity
• Prospects in Constraining the Dark Energy Potential
• Ensemble Average Theory of Gravity
• Bounds from ISW-galaxy cross-correlations on generalized covariant Galileon models
• Cosmological Scaling Solutions with Tachyon:Modified Gravity Model
• Statistical Determination of Bulk Flow Motions
• Exponential Potentials and Attractor Solution of Dilatonic Cosmology
• Non-homogeneous exoplanets in metric-affine gravity
• Junction conditions in gravity theories with extra scalar degrees of freedom
• Solar System Constraints on a Cosmologically Viable $f(R)$ Theory
• Relaxing a large cosmological constant in the astrophysical domain
• Is $w\ne -1$ evidence for a dynamical dark energy equation of state ?
• Oscillatory behavior of closed isotropic models in second order gravity theory
• Polynomial $f(R)$ Palatini cosmology -- dynamical system approach
• Critical exact solutions for self-gravitating Dirac fields
• Gravitational Coupling and Dynamical Reduction of The Cosmological Constant
• Cosmology and perturbations in tachyonic massive gravity
• Hamiltonian perturbation theory in f(R) gravity
• Anisotropy effects on Baryogenesis in $f(R)$-Theories of Gravity
• Stability investigations of isotropic and anisotropic exponential inflation in the Starobinsky-Bel-Robinson gravity
• An attempt to add Barrow entropy in $f(R)$ gravity
• Towards a possible solution for the coincidence problem: f(G) gravity as background
• Phantom fields: bounce solutions in the early Universe and S-branes
• Covariance of dark energy parameters and sound speed constraints from large HI surveys
• Comments on Scalar-Tensor Representation of $f(R)$ Theories
• Perturbation Spectra of Warm Inflation in $f(Q,T)$ Gravity
• Testing theories of Gravity and Supergravity with inflation and observations of the cosmic microwave background
• An extension of the cosmological standard model with a bounded Hubble expansion rate
• Gödel-type solutions within the $f(R,Q,P)$ gravity
• 1/R multidimensional gravity with form-fields: stabilization of extra dimensions, cosmic acceleration and domain walls
• On the Hyperbolicity and Stability of $3+1$ Formulations of Metric $f(R)$ Gravity
• The viable f(G) gravity models via reconstruction from the observations
• Generalized Modified Gravity in Large Extra Dimensions
• Tests of Relativistic Gravity in Space: Recent Progress and Future Directions
• Mass varying neutrinos with different quintessence potentials
• Pseudo generalized Ricci-recurrent spacetimes and modified gravity
• Dirac Cosmology and the Acceleration of the Contemporary Universe
• A minimal set of invariants as a systematic approach to higher order gravity models: Physical and Cosmological Constraints
• A canonical formalism of f(T)-type gravity in terms of Lie derivatives
• On analytical solutions of f(R) modified gravity theories in FLRW cosmologies
• A Note on de Sitter Embedding of $f(R)$ Theories
• Hyperbolicity Constraints in Extended Gravity Theories
• Energy Constraints for Evolving Spherical and Hyperbolic Wormholes in $f(R,T)$ Gravity
• Motion of pole-dipole and quadrupole particles in non-minimally coupled theories of gravity
• Notes on diffeomorphisms symmetry of $f(R)$ gravity in the cosmological context
• Speed of light in the extended gravity theories
• Modified gravity in a viscous and non-isotropic background
• Dark Energy from the Fifth Dimension
• Accelerating universe in two-dimensional noncommutative dilaton cosmology
• Strong and weak gravitational field in $R+{\mu }^4/R$ gravity
• Effective Actions for Loop Quantum Cosmology in Fourth-Order Gravity
• The Cosmology of Asymmetric Brane Modified Gravity
• Multicomponent solution in modified theory of gravity in the early universe
• Constraining $f(R)$ Theories with Temporal Variation of Fine Structure Constant
• Does Dirac-Born-Infeld Modification Of Quadratic Theories Really Matter?
• Dynamical and gravitational lensing properties of a new phenomenological model of elliptical galaxies
• Some Adventures in the Search for a Modified Gravity Explanation for Cosmic Acceleration
• Complementarity of Future Dark Energy Probes
• Transition from AdS universe to DS universe in the BPP model
• Lovelock-Brans-Dicke gravity
• Radion tunneling in modified theories of gravity
• Cosmic Acceleration and Geodesic Deviation in Chameleon Scalar Field Model
• Constraints on higher curvature gravity from time delay between GW170817 and GRB 170817A
• Constraints on Quasi-dilaton Massive Gravity
• Degeneracies between Modified Gravity and Baryonic Physics
• Slow-Roll Inflation in the Presence of a Dark Energy Coupling
• Modeling dark energy through an Ising fluid with network interactions
• Cosmic scenarios in $f(R)$ gravity: a complete evolution
• $f(R)$ Gravity and Crossing the Phantom Divide Barrier
• Cosmological Solutions of Chameleon Scalar Field Model
• Asymptotic solutions in f(R)-gravity
• Higher-Curvature Gravity, Black Holes and Holography
• Modified propagation of gravitational waves from the early radiation era
• Cosmological Models in Modified f(R) Gravity Theories
• Modified gravity from an entropy functional
• Modelling the environmental dependence of the growth rate
• Effects of Smoothing Functions in Cosmological Counts-in-Cells Analysis
• Crossing Phantom Boundary in $f(R)$ Modified Gravity : Jordan Frame vs Einstein Frame
• Removing Ostrogradski's ghost from cosmological perturbations in $f(R,R_{\mu \nu }^2,C_{\mu \nu \rho \sigma }^2)$ gravity
• Dark Energy as a Relic of the Vacuum-Energy Cancellation?
• Is the use of Christoffel connection in gravity theories conceptually correct?
• Phase transition in black holes
• From minimal-length quantum theory to modified gravity
• 3D gravity and non-linear cosmology
• Coincidence Problem and Holographic $f(R)$ Gravity in Spatially flat and Curved Universes
• Probing Time-Dependent Dark Energy with the Flux Power Spectrum of the Lyman $\alpha$ Forest
• Two non-commutative parameters and regular cosmological phase transition in the semi-classical dilaton cosmology
• f(R) cosmological solutions with varying speed of light
• The Coincidence Problem in Holographic f(R) Gravity
• Cosmic acceleration and the challenge of modifying gravity
• The Effects of Gravitational Slip on the Higher-Order Moments of the Matter Distribution
• Effect of $R^2$ on the stability of de Sitter solution of the generalized Einsteinian cubic gravity
• Long distance modifications of gravity in four dimensions
• The Exterior Calculus of Quadratic Gravity
• Cosmology in the mimetic higher-curvature $f(R,R_{\mu \nu }{R}^{\mu \nu })$ gravity
• Perturbations In Some Dark Energy Models
• Inflation and primordial fluctuations in $f(Q,T)$ gravity
• Equivalence of two solutions of physical massive gravity
• Is Dark Energy an Effective Manifestation of Non-equilibrium Thermodynamics? -- Insights from DESI
• The Compactification Problems of Additional Dimensions in Multidimensional Cosmological Theories
• Finite Future Cosmological Singularity Times and Maximum Predictability Times in a Nonlinear FRW-KG Scalar Cosmology
• Optical and Thermodynamic Signatures of Lorentz Symmetry Breaking in Bumblebee AdS Black Holes