Reconstruction of a scalar-tensor theory of gravity in an accelerating universe

Abstract

The present acceleration of the Universe strongly indicated by recent observational data can be modeled in the scope of a scalar-tensor theory of gravity. We show that it is possible to determine the structure of this theory (the scalar field potential and the functional form of the scalar-gravity coupling) along with the present density of dustlike matter from the following two observable cosmological functions: the luminosity distance and the linear density perturbation in the dustlike matter component as functions of redshift. Explicit results are presented in the first order in the small inverse Brans-Dicke parameter 1/omega.

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• Potential-density pairs for axisymmetric galaxies: the influence of scalar fields
• Generalized Brans-Dicke theories in light of evolving dark energy
• Growth of non-linear structures and spherical collapse in the Galileon Ghost Condensate model
• Gauge-ready formulation of cosmological perturbations in scalar-vector-tensor theories
• Scalar Field Cosmologies With Inverted Potentials
• Generalized Self-similar Scalar-Tensor Theories
• Equivalence between Scalar-Tensor theories and $f(R)$-gravity: From the action to Cosmological Perturbations
• Is gravity getting weaker at low z? Observational evidence and theoretical implications
• Global properties of the growth index of matter inhomogeneities in the universe
• Scalar-Tensor Quintessence with a linear potential: Avoiding the Big Crunch cosmic doomsday
• Noether Symmetry of the Hyperextended Scalar Tensor theory for the FLRW models
• Phantom cosmology as a scattering process
• Singularities in scalar-tensor gravity
• On the viability of Planck scale cosmology with quartessence
• Exponential Potentials and Attractor Solution of Dilatonic Cosmology
• Parametrization for the Scale Dependent Growth in Modified Gravity
• Mimicking general relativity in the solar system
• Measuring neutrino masses with joint JWST and DESI DR2 data
• Noether Symmetry Approach for Dirac-Born-Infeld Cosmology
• Inducing Gravity From Connections and Scalar Fields
• Withholding Potentials, Absence of Ghosts and Relationship between Minimal Dilatonic Gravity and f(R) Theories
• Neutrino generated dynamical dark energy with no dark energy field
• Complete density perturbations in the Jordan-Fierz-Brans-Dicke theory
• High energy description of dark energy in an approximate 3-brane Brans-Dicke cosmology
• Non-minimal coupling influence on the deviation from de Sitter cosmological expansion
• A Reconstruction of Quintessence Dark Energy
• A new approach to cosmological perturbations in f(R) models
• Cosmological perturbations in transient phantom inflation scenarios
• Weak gravity on a $\Lambda$CDM background
• Global properties of the growth index: mathematical aspects and physical relevance
• Dissecting kinetically coupled quintessence: phenomenology and observational tests
• Cosmological effects of the Galileon term in Scalar-Tensor Theories
• A spherical scalar-tensor galaxy model
• Cosmological Model of Interacting Tachyon Field
• A family of solutions to the inverse problem in gravitation: building a theory around a metric
• Stability analysis in Modified Non-Local Gravity
• Compact static stars in minimal dilatonic gravity
• Fab Four Effective Field Theory Treatment
• No "big trips" for the universe
• Critical gravitational collapse of a non-minimally coupled scalar field
• Scalar field potentials for closed and open cosmological models
• On the holographic dark energy in chameleon scalar-tensor cosmology
• Bouncing Cosmological Isotropic Solutions in Scalar-Tensor Gravity
• Remarks on generalized scalar-tensor models of dark energy
• Reconstructing a Model for Gravity at Large Distances from Dark Matter Density Profiles
• Loop quantum modified gravity and its cosmological application
• Particle creation in the framework of f(G) gravity
• Dynamical analysis for a scalar-tensor model with kinetic and non-minimal couplings
• Wave dynamics of phantom scalar perturbation in the background of Schwarzschild black hole
• Testing gravity of a regular and slowly rotating phantom black hole by quasi-periodic oscillations
• Self-accelerating solutions of scalar-tensor gravity
• The non-minimal coupling constant and the primordial de Sitter state
• Phantom dark energy with tachyonic instability: metric perturbations
• Improved parametrization of the growth index for dark energy and DGP models
• Study of Some Parameters of Modified Chaplygin Gas in Galileon Gravity Theory from Observational Perspective
• Novel Screening with Two Bodies: Summing the ladder in disformal scalar-tensor theories
• Observational data fitting to constrain Variable Modified Chaplygin Gas in the background of Horava-Lifshitz Gravity
• Unscreening of f(R) gravity near the galactic center black hole: Testability through pericenter shift below S0-2's orbit
• Phantom-Like Behavior of a DGP-Inspired Scalar-Gauss-Bonnet Gravity
• Constraints from CMB in the intermediate Brans-Dicke inflation
• On the problem of equation of state for the $\Lambda$ - field
• Extension of non-minimal derivative coupling theory and Hawking radiation in black-hole spacetime
• Non-Minimal Quintessence With Nearly Flat Potential
• Reconstructing the Universe Evolution from Loop Quantum Cosmology Scalar Fields
• Higher Order Lagrangians inspired by the Pais-Uhlenbeck Oscillator and their cosmological applications
• Two-field cosmological models and large-scale cosmic magnetic fields
• Connection Dynamics for Higher Dimensional Scalar-Tensor Theories of Gravity
• Observational Constraints of Homogeneous Higher Dimensional Cosmology with Modified Chaplygin Gas
• Perfect fluid solutions of Brans-Dicke and f(R)cosmology
• Constraints on scalar-tensor theories of gravity from observations
• Reconstructing quintom from WMAP 5-year observations: Generalized ghost condensate
• Braneworld cosmology in the sourced-Taub background
• Scalar - Tensor gravity with scalar -matter direct coupling and its cosmological probe
• The Distinguishability of Interacting Dark Energy from Modified Gravity
• Parametrizations in scalar-tensor theories of gravity and the limit of general relativity
• Revisiting the phenomenologically emergent dark energy model: is non-zero equation of state of dark matter favored by DESI DR2?
• Particle creation in flat FRW Universe in the framework of $f(T)$ gravity
• Dynamical evolution of phantom scalar perturbation in the background of Schwarzschild black String spacetime
• Observational Constraints of Modified Chaplygin Gas in RS II Brane
• Constraining cosmological scaling solutions of a Galileon field
• Constraining Parameters of Generalized Cosmic Chaplygin Gas in Loop Quantum Cosmology
• Loop Quantum Cosmology Scalar Field Models
• Effects of a Late Gravitational Transition on Gravitational Waves and Anticipated Constraints
• Generalized unimodular gravity in Friedmann and Kantowski-Sachs universes
• Interacting Dark Side of Universe Through Generalized Uncertainty Principle
• On the consistency of the expansion with the perturbations
• Reconstruction and exact solutions for cosmological perturbations from a generalized gravity theory
• Investigation of Bouncing Universe and Phantom Crossing in Modified Gravity Coupled with Weyl Tensor and its Reconstruction
• Observational Constraints on Braneworld Geometry
• Non-linear spherical collapse in tachyon models, and a comparison of collapse in tachyon and quintessence models of dark energy
• Dynamics of cosmological perturbations in modified Brans-Dicke cosmology with matter-scalar field interaction
• Observational tests of the Glavan, Prokopec and Starobinsky model of dark energy
• Hyperbolic inflation in the Jordan frame
• Future soft singularities, Born-Infeld-like fields and particles
• Cosmic acceleration in a model of scalar-tensor gravitation
• The torsion cosmology in Kaluza-Klein theory
• Addressing the DESI DR2 Phantom-Crossing Anomaly and Enhanced $H_0$ Tension with Reconstructed Scalar-Tensor Gravity
• Scalar tachyonic instabilities in gravitational backgrounds: Existence and growth rate
• The initial value problem of scalar-tensor theories of gravity
• Stability analysis and observational constraints in scalar tensor theory
• Modification to the Luminosity Distance Redshift Relation in Modified Gravity Theories
• Loop quantum cosmological dynamics of scalar-tensor theory in the Jordan frame
• Intensity mapping of post-reionization 21-cm signal and its cross-correlations as a probe of $f(R)$ gravity
• Entropy of cosmological black holes and generalized second law in phantom energy-dominated universe
• Realizing the phantom-divide crossing with vector and scalar fields
• Reconstructions of Einstein-Aether Gravity from Barrow Agegraphic and New Barrow Agegraphic Dark Energy models: Examinations and Observational Limits
• Implications of Dynamical Dark Energy in the expansion of the Universe and the Structure Formation
• Slow-roll, acceleration, the Big Rip and WKB approximation in NLS-type formulation of scalar field cosmology
• From inflation to dark energy in scalar-tensor cosmology
• Constraining the runaway dilaton and quintessential dark energy
• Dynamical transition to spontaneous scalarization in neutron stars: The massive scalar field scenario
• Observational Study of Higher Dimensional Magnetic Universe in Non-linear Electrodynamics
• Exact solutions in a scalar-tensor model of dark energy
• Phantom scalar emission in the Kerr black hole spacetime
• Study of Some Cosmological Parameters for Interacting New Holographic Dark Energy Model in f(T) Gravity
• Potentials of Coupled Quintessence Based on a Dilaton
• Power-law expansion and Higgs-type potential in a scalar-tensor model
• De Sitter ground state of scalar-tensor gravity and its primordial perturbation
• Black Hole Entropy and Boundary Conditions
• Red-shift parametrizations of dark energy and observational constraint on their parameters: Galileon gravity as background
• Consistency Relation and Non-Gaussianity in a Galileon Inflation
• Accelerated Expansion: Theory and Observations
• The string theory swampland in the Euclid, SKA and Vera Rubin observatory era
• Global portraits of nonminimal inflation
• Correlation of structure growth index with current cosmic acceleration: constraints on dark energy models
• An exotic k-essence interpretation of interactive cosmological models
• Loop-corrected scalar potentials and late-time acceleration in f(R) gravity
• Robustness of the Cosmological Constant Damping Mechanism Through Matter Eras
• Conformal Frame dependence on Cosmological Observations in Scalar-Tensor Theories of Gravity
• f(R) cosmological solutions with varying speed of light
• Generic autonomous system approach to interacting dark energy models
• Scalar perturbation and density contrast evolution in $f(Q,C)$ gravity
• Conformal Cosmology and Supernova Data
• The galaxy cluster concentration-mass relation in dark energy cosmologies
• The relation between Geometry and Matter in classical and quantum Gravity and Cosmology
• Scalar-Induced Gravitational Waves in Palatini $f(R)$ Gravity
• Is Dark Energy an Effective Manifestation of Non-equilibrium Thermodynamics? -- Insights from DESI
• Conditional variational autoencoders for cosmological model discrimination and anomaly detection in cosmic microwave background power spectra
• Generating $G_2$--cosmologies with perfect fluid in dilaton gravity
• Post-Newtonian Constraints on Scalar-Tensor Gravity
• Matter growth in extended $\Lambda$CDM cosmology
• Cosmological solutions of Tensor-Vector theories of gravity with varying the space-time-matter coupling constant
• Mechanics of Isolated Horizons in Scalar-Tensor Theories
• Resolving the Hubble Tension in the Early Dark Energy Framework with JWST and DESI Data
• Hamilton-Jacobi formalism for Generalized Chaplygin Gas models