Dark energy in Horndeski theories after GW170817: A review

Abstract

The gravitational-wave event GW170817 from a binary neutron star merger together with the electromagnetic counterpart showed that the speed of gravitational waves $c_t$ is very close to that of light for the redshift $z<0.009$. This places tight constraints on dark energy models constructed in the framework of modified gravitational theories. We review models of the late-time cosmic acceleration in scalar-tensor theories with second-order equations of motion (dubbed Horndeski theories) by paying particular attention to the evolution of dark energy equation of state and observables relevant to the cosmic growth history. We provide a gauge-ready formulation of scalar perturbations in full Horndeski theories and estimate observables associated with the evolution of large-scale structures, cosmic microwave background, and weak lensing by employing a so-called quasi-static approximation for the modes deep inside the sound horizon. In light of the recent observational bound of $c_t$, we also classify surviving dark energy models into four classes depending on different structure-formation patterns and discuss how they can be observationally distinguished from each other. In particular, the nonminimally coupled theories in which the scalar field $\varphi$ has a coupling with the Ricci scalar $R$ of the form $G_4(\varphi )R$, including $f(R)$ gravity, can be tightly constrained not only from the cosmic expansion and growth histories but also from the variation of screened gravitational couplings. The cross correlation of integrated Sachs-Wolfe signal with galaxy distributions can be a key observable for placing bounds on the relative ratio of cubic Galileon density to total dark energy density. The dawn of gravitational-wave astronomy will open up a new window to constrain nonminimally coupled theories further by the modified luminosity distance of tensor perturbations.

51 pages, 5 figures, published version

References in corpus (273)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Planck 2015 results. XIII. Cosmological parameters
• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Planck 2013 results. XVI. Cosmological parameters
• Dynamics of dark energy
• The Cosmological Constant and Dark Energy
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• f(R) Theories Of Gravity
• Modified Gravity and Cosmology
• f(R) theories
• Cosmological Imprint of an Energy Component with General Equation of State
• 4D Gravity on a Brane in 5D Minkowski Space
• Cosmological Constant - the Weight of the Vacuum
• The Case for a Positive Cosmological Lambda-term
• Cosmology and the Fate of Dilatation Symmetry
• Quintessence, Cosmic Coincidence, and the Cosmological Constant
• The Cosmological Constant
• Exploring the Expansion History of the Universe
• Accelerating Universes with Scaling Dark Matter
• Is Cosmic Speed-Up Due to New Gravitational Physics?
• Modified gravity with negative and positive powers of the curvature: unification of the inflation and of the cosmic acceleration
• A 2.4% Determination of the Local Value of the Hubble Constant
• A Dynamical Solution to the Problem of a Small Cosmological Constant and Late-time Cosmic Acceleration
• String Axiverse
• k-Inflation
• The galileon as a local modification of gravity
• Essentials of k-essence
• Coupled Quintessence
• The 3D power spectrum of galaxies from the SDSS
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Chameleon Fields: Awaiting Surprises for Tests of Gravity in Space
• Chameleon Cosmology
• The Confrontation between General Relativity and Experiment
• Cosmological Tracking Solutions
• An Ordinary Short Gamma-Ray Burst with Extraordinary Implications: Fermi-GBM Detection of GRB 170817A
• Exponential potentials and cosmological scaling solutions
• Kinetically Driven Quintessence
• Curvature Quintessence
• Modified Gauss-Bonnet theory as gravitational alternative for dark energy
• Disappearing cosmological constant in f(R) gravity
• The String Dilaton and a Least Coupling Principle
• Rolling Tachyon
• Beyond the Cosmological Standard Model
• Generalized G-inflation: Inflation with the most general second-order field equations
• From k-essence to generalised Galileons
• Covariant Galileon
• DBI in the Sky
• Inflation Dynamics and Reheating
• Accelerated expansion of the universe driven by tachyonic matter
• Pre-Big-Bang in String Cosmology
• Dark Energy after GW170817: dead ends and the road ahead
• Cosmology with Ultra-light Pseudo-Nambu-Goldstone Bosons
• Everything You Always Wanted To Know About The Cosmological Constant Problem (But Were Afraid To Ask)
• Cosmology with a Primordial Scaling Field
• Reconstruction of a scalar-tensor theory of gravity in an accelerating universe
• Ghost Condensation and a Consistent Infrared Modification of Gravity
• The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the universe
• Strong constraints on cosmological gravity from GW170817 and GRB 170817A
• Dark Energy after GW170817 and GRB170817A
• Scalar Speed Limits and Cosmology: Acceleration from D-cceleration
• Gauss-Bonnet dark energy
• Implications of the Neutron Star Merger GW170817 for Cosmological Scalar-Tensor Theories
• Healthy theories beyond Horndeski
• Generalized Galileons: All scalar models whose curved background extensions maintain second-order field equations and stress tensors
• Progress in Lunar Laser Ranging Tests of Relativistic Gravity
• Conditions for the cosmological viability of f(R) dark energy models
• Cosmological Tests of Modified Gravity
• 1/R gravity and Scalar-Tensor Gravity
• Strong Interactions and Stability in the DGP Model
• Imperfect Dark Energy from Kinetic Gravity Braiding
• Cosmological perturbations
• Scaling solutions in general non-minimal coupling theories
• Degenerate higher derivative theories beyond Horndeski: evading the Ostrogradski instability
• Quintessence arising from exponential potentials
• Cosmological Evolution of the Rolling Tachyon
• Purely kinetic k-essence as unified dark matter
• Structure formation with a self-tuning scalar field
• Transforming gravity: from derivative couplings to matter to second-order scalar-tensor theories beyond the Horndeski Lagrangian
• A New Cosmological Model of Quintessence and Dark Matter
• Are f(R) dark energy models cosmologically viable ?
• Do consistent $F(R)$ models mimic General Relativity plus $\Lambda$?
• G-inflation: inflation driven by the Galileon field
• Nonperturbative Continuity in Graviton Mass versus Perturbative Discontinuity
• The Effective Field Theory of Dark Energy
• The WiggleZ Dark Energy Survey: the growth rate of cosmic structure since redshift z=0.9
• Classical and Quantum Consistency of the DGP Model
• Cosmological scaling solutions of non-minimally coupled scalar fields
• Prospects for probing the dark energy via supernova distance measurements
• Exploring gravitational theories beyond Horndeski
• General second order scalar-tensor theory, self tuning, and the Fab Four
• Dark Energy vs. Modified Gravity
• Observational signatures of f(R) dark energy models that satisfy cosmological and local gravity constraints
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measurements of the growth of structure and expansion rate at z=0.57 from anisotropic clustering
• Maximal freedom at minimum cost: linear large-scale structure in general modifications of gravity
• Scalar-tensor gravity in an accelerating universe
• Measuring the dark side (with weak lensing)
• Essential Building Blocks of Dark Energy
• Extended Scalar-Tensor Theories of Gravity
• New Model of Inflation with Non-minimal Derivative Coupling of Standard Model Higgs Boson to Gravity
• Extended Quintessence
• Constraining f(R) Gravity as a Scalar Tensor Theory
• Approaches to Understanding Cosmic Acceleration
• An introduction to the Vainshtein mechanism
• Planck 2015 results. XIV. Dark energy and modified gravity
• Generalization of the Proca Action
• Dilatonic ghost condensate as dark energy
• Construction of cosmologically viable f(G) gravity models
• Quintessence without scalar fields
• Breaking a Dark Degeneracy with Gravitational Waves
• Phenomenology of a realistic accelerating universe using only Planck-scale physics
• Tachyon couplings on non-BPS D-branes and Dirac-Born-Infeld action
• Quintessence, the Gravitational Constant, and Gravity
• Dark Energy or Modified Gravity? An Effective Field Theory Approach
• f(R) Gravity and Chameleon Theories
• The VIMOS Public Extragalactic Redshift Survey (VIPERS). Galaxy clustering and redshift-space distortions at z=0.8 in the first data release
• Cosmology of a covariant Galileon field
• Solar system and equivalence principle constraints on f(R) gravity by chameleon approach
• Matter density perturbations and effective gravitational constant in modified gravity models of dark energy
• Scalar-Tensor Gravity and Quintessence
• Modified gravity models of dark energy
• Phantom crossing, equation-of-state singularities, and local gravity constraints in f(R) models
• Galileon inflation
• Cosmology with Nonminimal Derivative Couplings
• What is needed of a tachyon if it is to be the dark energy?
• DBI and the Galileon reunited
• Cosmic Acceleration from Abelian Symmetry Breaking
• Non-linear Evolution of f(R) Cosmologies III: Halo Statistics
• The Subaru FMOS galaxy redshift survey (FastSound). IV. New constraint on gravity theory from redshift space distortions at $z\sim 1.4$
• Cosmology with x-matter
• The Effective Theory of Quintessence: the w<-1 Side Unveiled
• Cosmology and Astrophysical Constraints of Gauss-Bonnet Dark Energy
• 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
• Effective Field Theory of Cosmic Acceleration: an implementation in CAMB
• The 2dF Galaxy Redshift Survey: Spherical Harmonics analysis of fluctuations in the final catalogue
• A Singularity Problem with f(R) Dark Energy
• Derivative self-interactions for a massive vector field
• Exponential Gravity
• Thawing quintessence with a nearly flat potential
• Cosmological dynamics of the tachyon with an inverse power-law potential
• Gauss-Bonnet Quintessence: Background Evolution, Large Scale Structure and Cosmological Constraints
• The gravitational-wave luminosity distance in modified gravity theories
• Non-linear evolution of f(R) cosmologies II: power spectrum
• The essence of quintessence and the cost of compression
• N-body Simulations for f(R) Gravity using a Self-adaptive Particle-Mesh Code
• Self-Accelerating Universe in Galileon Cosmology
• The Imperfect Fluid behind Kinetic Gravity Braiding
• Early-universe constraints on a Primordial Scaling Field
• Modified gravitational-wave propagation and standard sirens
• Relativistic stars in f(R) gravity, and absence thereof
• Astrophysical Tests of Modified Gravity: Constraints from Distance Indicators in the Nearby Universe
• Hamiltonian analysis of higher derivative scalar-tensor theories
• f(R) actions, cosmic acceleration and local tests of gravity
• A model independent approach to the dark energy equation of state
• Solving the Coincidence Problem: Tracking Oscillating Energy
• Cosmology in generalized Proca theories
• Unifying framework for scalar-tensor theories of gravity
• Vainshtein screening in a cosmological background in the most general second-order scalar-tensor theory
• CFHTLenS: Cosmological constraints from a combination of cosmic shear two-point and three-point correlations
• Galileon Gravity in Light of ISW, CMB, BAO and $H_0$ data
• Non-linear evolution of f(R) cosmologies I: methodology
• Self-tuning and the derivation of the Fab Four
• Cosmology from Cosmic Shear with DES Science Verification Data
• Sequestering the Standard Model Vacuum Energy
• A unified approach to scaling solutions in a general cosmological background
• Effective Field Theory of Cosmic Acceleration: constraining dark energy with CMB data
• hi_class: Horndeski in the Cosmic Linear Anisotropy Solving System
• Generalized Proca action for an Abelian vector field
• Generalized Galileon cosmology
• How many dark energy parameters?
• String or M theory axion as a quintessence
• Constraints on scalar-tensor models of dark energy from observational and local gravity tests
• Tracking solutions in tachyon cosmology
• Galileon gravity and its relevance to late time cosmic acceleration
• Challenges for scaling cosmologies
• The recovery of General Relativity in massive gravity via the Vainshtein mechanism
• Observables and unobservables in dark energy cosmologies
• Effective Field Theory of Cosmological Perturbations
• A practical approach to cosmological perturbations in modified gravity
• Breaking of Vainshtein screening in scalar-tensor theories beyond Horndeski
• Effective theory for the Vainshtein mechanism from the Horndeski action
• Constraints on f(R) gravity from probing the large-scale structure
• Weak lensing in scalar-tensor theories of gravity
• Observational constraints on Galileon cosmology
• DBI Galileons in the Einstein Frame: Local Gravity and Cosmology
• The nonlinear matter and velocity power spectra in f(R) gravity
• Matter perturbations in Galileon cosmology
• Lectures on the Cosmological Constant Problem
• The observational status of Galileon gravity after Planck
• Effective gravitational couplings for cosmological perturbations in generalized Proca theories
• Density perturbations in general modified gravitational theories
• Matter density perturbations in modified gravity models with arbitrary coupling between matter and geometry
• Gauge-ready formulation of the cosmological kinetic theory in generalized gravity theories
• The existence of relativistic stars in f(R) gravity
• String-inspired cosmology: Late time transition from scaling matter era to dark energy universe caused by a Gauss-Bonnet coupling
• A Simplified Approach to General Scalar-Tensor Theories
• Observational Constraints on Quintessence: Thawing, Tracker, and Scaling models
• The fate of large-scale structure in modified gravity after GW170817 and GRB170817A
• A Quintessential Axion
• Cosmic expansion and growth histories in Galileon scalar-tensor models of dark energy
• Improved constraints on H0 from a combined analysis of gravitational-wave and electromagnetic emission from GW170817
• Evolution of linear cosmological perturbations and its observational implications in Galileon-type modified gravity
• Constraints on Shift-Symmetric Scalar-Tensor Theories with a Vainshtein Mechanism from Bounds on the Time Variation of G
• DBI-essence
• Testing modified gravity with Planck: the case of coupled dark energy
• Vainshtein Mechanism in Binary Pulsars
• Galileons in the Sky
• Relativistic stars in f(R) gravity
• A late-time transition in the cosmic dark energy?
• A Manifestly Local Theory of Vacuum Energy Sequestering
• Self-accelerating universe in scalar-tensor theories after GW170817
• Vainshtein mechanism in second-order scalar-tensor theories
• Modified gravity and the stability of de Sitter space
• Generalized Brans-Dicke theories
• Delicate f(R) gravity models with disappearing cosmological constant and observational constraints on the model parameters
• Unified Dark Matter Scalar Field Models
• Revisiting fifth forces in the Galileon model
• Quintessence Axion Potential Induced by Electroweak Instanton Effects
• The parameter space in Galileon gravity models
• Laboratory Tests of the Galileon
• Direct detection of gravitational waves can measure the time variation of the Planck mass
• Structure Formation by Fifth Force I: N-Body vs. Linear Simulations
• Phantom boundary crossing and anomalous growth index of fluctuations in viable f(R) models of cosmic acceleration
• Cosmology of the proxy theory to massive gravity
• Matter instabilities in general Gauss-Bonnet gravity
• The Vainshtein mechanism in the Decoupling Limit of massive gravity
• Effective field theory of modified gravity with two scalar fields: dark energy and dark matter
• Large-scale structure phenomenology of viable Horndeski theories
• Theoretical Priors On Modified Growth Parametrisations
• A note on the equivalence of a barotropic perfect fluid with a K-essence scalar field
• The cosmology of the Fab-Four
• How the Scalar Field of Unified Dark Matter Models Can Cluster
• Chameleon dark energy models with characteristic signatures
• Partial accretion in the propeller stage of low mass X-ray binary Aql X--1
• Observational tests of x-matter models
• Reconstruction of the Dark Energy equation of state
• Do current cosmological observations rule out all Covariant Galileons?
• Screening the fifth force in the Horndeski's most general scalar-tensor theories
• Challenges for Kinetic Unified Dark Matter
• Cosmological perturbations of a perfect fluid and noncommutative variables
• Effective field theory approach to modified gravity including Horndeski theory and Hořava-Lifshitz gravity
• Chameleon scalar fields in relativistic gravitational backgrounds
• Light mass galileons: Cosmological dynamics, mass screening and observational constraints
• Equivalence Principle Violation in Vainshtein Screened Two-Body Systems
• Galileons on Trial
• Dark energy scenario consistent with GW170817 in theories beyond Horndeski gravity
• Cosmology in generalized Horndeski theories with second-order equations of motion
• Galileon Hairs of Dyson Spheres, Vainshtein's Coiffure and Hirsute Bubbles
• Speeding up $N$-body simulations of modified gravity: Chameleon screening models
• 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
• Experimental constraints on the uncoupled Galileon model from SNLS3 data and other cosmological probes
• Testing Einstein Gravity with Cosmic Growth and Expansion
• Possibility of realizing weak gravity in redshift space distortion measurements
• Updated observational constraints on quintessence dark energy models
• Observational constraints on dark energy with a fast varying equation of state
• Reconstructing Horndeski models from the effective field theory of dark energy
• Cosmological constraints on the Hu-Sawicki modified gravity scenario
• Galileon forces in the Solar System
• Testing for dynamical dark energy models with redshift-space distortions
• Background cosmological dynamics in $f(R)$ gravity and observational constraints
• Cosmological Evolution of Dirac-Born-Infeld Field
• Assisted dark energy
• The Equation of State of Tracker Fields
• Cosmology with a successful Vainshtein screening in theories beyond Horndeski
• Do cosmological data rule out $f(\mathcal{R})$ with $w\ne -1$?
• Cosmological Scaling Solutions for Multiple Scalar Fields
• CMB-Galaxy correlation in Unified Dark Matter Scalar Field Cosmologies
• New scaling solutions in cubic Horndeski theories

Cited by in corpus (170)

• Challenges for $\Lambda$CDM: An update
• Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A${}^{\ast }$
• Horndeski theory and beyond: a review
• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Effective Field Theory of Dark Energy: a Review
• The electromagnetic counterparts of compact binary mergers
• Is Local $H_0$ At Odds With Dark Energy EFT?
• Evolution of Einstein-scalar-Gauss-Bonnet gravity using a modified harmonic formulation
• The Gravitational-Wave Physics II: Progress
• Underdetermination of dark energy
• Probing observational bounds on scalar-tensor theories from standard sirens
• Geodesic deviation, Raychaudhuri equation, Newtonian limit, and tidal forces in Weyl-type $f(Q,T)$ gravity
• Direct detection of dark energy: the XENON1T excess and future prospects
• Vainshtein regime in Scalar-Tensor gravity: constraints on DHOST theories
• An Upper Limit on the Charge of the Black Hole Sgr A* from EHT Observations
• Soundness of Dark Energy properties
• Phenomenology of the generalized cubic covariant Galileon model and cosmological bounds
• Quasi-static evolution of axially and reflection symmetric large-scale configuration
• hi_class: Background Evolution, Initial Conditions and Approximation Schemes
• Scalar-field dark energy nonminimally and kinetically coupled to dark matter
• KiDS+GAMA: Constraints on Horndeski gravity from combined large-scale structure probes
• Probing modified gravity theories and cosmology using gravitational-waves and associated electromagnetic counterparts
• Forecasting constraints on deviations from general relativity in $f(Q)$ gravity with standard sirens
• Dark energy beyond quintessence: Constraints from the swampland
• Parametric and nonparametric methods hint dark energy evolution
• Investigating strong gravitational lensing effects by suppermassive black holes with Horndeski gravity
• Tidal Love Numbers of Black Holes and Neutron Stars in the Presence of Higher Dimensions: Implications of GW170817
• Quasiperiodic oscillations around hairy black holes in Horndeski gravity
• Quantum gravity and gravitational-wave astronomy
• Future Constraints on Dynamical Dark-Energy using Gravitational-Wave Standard Sirens
• Designing Horndeski and the effective fluid approach
• Rotating Black Holes in Horndeski Gravity: Thermodynamic and Gravitational Lensing
• Modified Gravity Constraints from the Full Shape Modeling of Clustering Measurements from DESI 2024
• Scaling solutions and weak gravity in dark energy with energy and momentum couplings
• Optimising growth of structure constraints on modified gravity
• Metric $f(R)$ gravity with dynamical dark energy as a scenario for the Hubble tension
• A data-driven Reconstruction of Horndeski gravity via the Gaussian processes
• Scalar and tensor gravitational waves
• Screened Fifth Forces Mediated by Dark Matter-Baryon Interactions: Theory and Astrophysical Probes
• Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
• Constraining gravitational wave propagation using pulsar timing array correlations
• Exploiting the Einstein Telescope to solve the Hubble tension
• Probing cosmological fields with gravitational wave oscillations
• Relativistic star perturbations in Horndeski theories with a gauge-ready formulation
• Limitations on Standard Sirens tests of gravity from screening
• A comprehensive numerical study on four categories of holographic dark energy models
• Cosmology with the Einstein Telescope: No Slip Gravity Model and Redshift Specifications
• Velocity-dependent interacting dark energy and dark matter with a Lagrangian description of perfect fluids
• Einstein Yang-Mills Higgs dark energy revisited
• Horndeski in the Swampland
• Revisiting the Scalar Weak Gravity Conjecture
• General formulation of cosmological perturbations in scalar-tensor dark energy coupled to dark matter
• Towards a possible solution to the Hubble tension with Horndeski gravity
• New constraints on cosmological modified gravity theories from anisotropic three-point correlation functions of BOSS DR12 galaxies
• Linear stability of black holes with static scalar hair in full Horndeski theories: generic instabilities and surviving models
• Primordial black holes formation and secondary gravitational waves in nonminimal derivative coupling inflation
• Inspiral gravitational waveforms from compact binary systems in Horndeski gravity
• General constraints on Horndeski wormhole throats
• Coupled vector dark energy
• Primordial black holes from Higgs inflation with a Gauss-Bonnet coupling
• Primordial black holes and gravitational waves in teleparallel Gravity
• J-PAS: forecasts on interacting vacuum energy models
• Cosmological constraints and phenomenology of a beyond-Horndeski model
• Well-Tempered Minkowski Solutions in Teleparallel Horndeski Theory
• Inherently stable effective field theory for dark energy and modified gravity
• Probing Modified Gravity with Integrated Sachs-Wolfe CMB and Galaxy Cross-correlations
• Lunar Laser Ranging constraints on nonminimally coupled dark energy and standard sirens
• Testing gravity with cosmic variance-limited pulsar timing array correlations
• Horndeski under the quantum loupe
• Improving data-driven model-independent reconstructions and updated constraints on dark energy models from Horndeski cosmology
• Scalar-Tensor Gravity and DESI 2024 BAO data
• Beyond the Hellings-Downs curve: Non-Einsteinian gravitational waves in pulsar timing array correlations
• Modified gravity in the interior of population II stars
• Stealth black holes in shift symmetric kinetic gravity braiding
• Constraining Horndeski theory with gravitational waves from coalescing binaries
• Propagation of scalar and tensor gravitational waves in Horndeski theory
• Constraining modified gravity from tidal phenomena in binary stars
• Forecast constraints on Anisotropic Stress in Dark Energy using gravitational-waves
• Limited Modified Gravity
• Cosmology with subdominant Horndeski scalar field
• Small Anisotropy in Stellar Objects in Modified Theories of Gravity
• Charting the Nanohertz Gravitational Wave Sky with Pulsar Timing Arrays
• Gravitational-wave constraints on scalar-tensor gravity from a neutron star and black-hole binary GW200115
• Instability of compact stars with a nonminimal scalar-derivative coupling
• Neutron Stars in Modified Teleparallel Gravity
• Cosmological stability in $f(\varphi ,\mathcal{G})$ gravity
• White dwarfs in regularized 4D Einstein-Gauss-Bonnet gravity
• Growth of non-linear structures and spherical collapse in the Galileon Ghost Condensate model
• Starobinsky inflation with a quadratic Weyl tensor
• Dark sector evolution in Horndeski models
• Constraining Palatini-Horndeski theory with gravitational waves after GW170817
• Dark energy loopholes some time after GW170817
• One-loop effective scalar-tensor gravity
• Transformation of Primordial Cosmological Perturbations Under the General Extended Disformal Transformation
• Gravitational waves in higher-order $R^2$ gravity
• No slip gravity in light of LISA standard sirens
• Unveiling the Galileon in a three-body system : scalar and gravitational wave production
• Cosmological determination to the values of the prefactors in the logarithmic corrected entropy-area relation
• Cross-bispectra Constraints on Modified Gravity Theories from Nancy Grace Roman Space Telescope and Rubin Observatory Legacy Survey of Space and Time
• Weak gravity on a $\Lambda$CDM background
• Observational constraints on interactions between dark energy and dark matter with momentum and energy transfers
• Cosmological effects of the Galileon term in Scalar-Tensor Theories
• The little rip in classical and quantum $f(R)$ cosmology
• Classical and quantum $f(R)$ cosmology: The big rip, the little rip and the little sibling of the big rip
• Tailoring cosmologies in cubic shift-symmetric Horndeski gravity
• Exploring cosmological imprints of phantom crossing with dynamical dark energy in Horndeski gravity
• Interacting Models of Dark Energy and Dark Matter in Einstein scalar Gauss Bonnet Gravity
• The Effective Fluid approach for Modified Gravity and its applications
• Searching for dark energy in the matter-dominated era
• Covariant formulation of refracted gravity
• Self-tuning kinetic gravity braiding: Cosmological dynamics, shift symmetry, and the tadpole
• Shift-symmetric Horndeski gravity in the asymptotic-safety paradigm
• Spin precession as a new window into disformal scalar fields
• Hair-dressing Horndeski: an approach to hairy solutions in cubic Horndeski gravity
• Dark energy with a shift-symmetric scalar field: obstacles, loophole hunting and dead ends
• Confronting quantum-corrected teleparallel cosmology with observations
• Simple traversable wormholes violating energy conditions only near the Planck scale
• Exploring Modified Gravity: Constraints on the $\mu$ and $\Sigma$ Parametrization with WMAP, ACT, and SPT
• Scalar-Gauss-Bonnet model, the coincidence problem and the gravitational wave speed
• Consistency of Cubic Galileon Cosmology: Model-Independent Bounds from Background Expansion and Perturbative Analyses
• Stability of neutron stars in Horndeski theories with Gauss-Bonnet couplings
• Cosmological evolutions in Tsujikawa model of $f(R)$ Gravity
• Strong Gravitational Lensing in Horndeski theory
• Gravastar model in Randall-Sundrum braneworld
• Stealth black hole perturbations in kinetic gravity braiding
• Scalar Dark Energy Models and Scalar-Tensor Gravity: Theoretical Explanations for the Accelerated Expansion of Present Universe
• Gravitational wave signatures from dark sector interactions
• Polarization and speed of gravitational waves in hybrid metric-Palatini f(R)-gravity
• An issue with the classification of the scalar-tensor theories of gravity
• Kinetic gravity braiding wormhole geometries
• Neutron stars and the cosmological constant problem
• Classical and quantum cosmology of Fab Four John theories
• Post-Newtonian Binary Dynamics in Effective Field Theory of Horndeski Gravity
• Next step in gravity and cosmology: fundamental theory or data-driven models?
• Holographic Boundary Conformal Field Theory within Horndeski Gravity
• The Schönberg-Chandrasekhar limit in presence of small anisotropy and modified gravity
• Cosmology in theories with spontaneous scalarization of neutron stars
• A Bright Future? Prospects for Cosmological Tests of GR with Multimessenger Gravitational Wave Events
• Effective field theory of coupled dark energy and dark matter
• Realizing the phantom-divide crossing with vector and scalar fields
• Lanczos equation on light-like hypersurfaces in a cosmologically viable class of kinetic gravity braiding theories
• Symmetry restoration in the vicinity of neutron stars with a nonminimal coupling
• Perturbations in Regularized Lovelock Gravity
• A novel two-field pure K-essence for inflation, dark matter, dark energy and black holes
• On two body gravitational scattering within perturbative gravit
• Early dark energy and scalarization in a scalar-tensor model
• Vainshtein screening in Horndeski theories nonminimally and kinetically coupled to ordinary matter
• A Post-Newtonian Analysis of Regularized 4D-EGB Theory: Complete Set of PPN Parameters and Observational Constraints
• On phenomenological parametrizations for the luminosity distance of gravitational waves
• Linear and nonlinear clusterings of Horndeski-inspired dark energy models with fast transition
• Thermal channels of scalar and tensor waves in Jordan-frame scalar--tensor gravity
• Strong coupling and instabilities in singularity-free inflation from an infinite sum of curvature corrections
• From Dark Radiation to Dark Energy: Unified Cosmological Evolution in K-essence Models
• Extremal cosmological black holes in Horndeski gravity and the anti-evaporation regime
• Onset of dark energy from cosmological scalarization and gravitational wave speed
• Spherically symmetric, static black holes with scalar hair, and naked singularities in nonminimally coupled k-essence
• Cosmological scalar perturbations in Horndeski-like gravity
• K-essence sources of Kerr-Schild spacetimes
• Constraining Scalar Charge in Neutron Stars through Gravitational Wave Signals from NSBH Mergers
• Recent advances on multimessenger astrophysics: Centaurus A, GW 170817, and KM3-230213A
• Future Dark Energy Constraints from Atomic Clocks
• An effective fluid description of scalar-vector-tensor theories under the sub-horizon and quasi-static approximations
• Revisiting observational constraints on coupled exponential quintessence with energy and momentum transfers: degeneracy with massive neutrinos
• Scalar-scalar-tensor interaction in DHOST theories
• Exact pp-wave solutions in shift-symmetric higher-order scalar-tensor theories
• Cosmic acceleration from string induced Galileons
• Tidal love number of neutron stars with conformal coupling
• Accelerated expansion as manifestation of gravity: when Dark Energy belongs to the left
• Perturbations and stability conditions of k-essence and kinetic gravity braiding models in two-field measure theory
• Linear perturbations of dyonic black holes in the lowest-order $U(1)$ gauge-invariant scalar-vector-tensor theories