Dark energy scenario consistent with GW170817 in theories beyond Horndeski gravity

Abstract

The Gleyzes-Langlois-Piazza-Vernizzi (GLPV) theories up to quartic order are the general scheme of scalar-tensor theories allowing the possibility for realizing the tensor propagation speed $c_t$ equivalent to 1 on the isotropic cosmological background. We propose a dark energy model in which the late-time cosmic acceleration occurs by a simple k-essence Lagrangian analogous to the ghost condensate with cubic and quartic Galileons in the framework of GLPV theories. We show that a wide variety of the variation of the dark energy equation of state $w_{\mathrm{DE}}$ including the entry to the region $w_{\mathrm{DE}}<-1$ can be realized without violating conditions for the absence of ghosts and Laplacian instabilities. The approach to the tracker equation of state $w_{\mathrm{DE}}=-2$ during the matter era, which is disfavored by observational data, can be avoided by the existence of a quadratic k-essence Lagrangian $X^2$. We study the evolution of nonrelativistic matter perturbations for the model $c_t^2=1$ and show that the two quantities $\mu$ and $\Sigma$, which are related to the Newtonian and weak lensing gravitational potentials respectively, are practically equivalent to each other, such that $\mu \simeq \Sigma >1$. For the case in which the deviation of $w_{\mathrm{DE}}$ from $-1$ is significant at a later cosmological epoch, the values of $\mu$ and $\Sigma$ tend to be larger at low redshifts. We also find that our dark energy model can be consistent with the bounds on the deviation parameter ${\alpha }_{\mathrm{H}}$ from Horndeski theories arising from the modification of gravitational law inside massive objects.

23 pages, 7 figures, published version

References in corpus (38)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Dynamics of dark energy
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• Cosmology and the Fate of Dilatation Symmetry
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• An Ordinary Short Gamma-Ray Burst with Extraordinary Implications: Fermi-GBM Detection of GRB 170817A
• Disappearing cosmological constant in f(R) gravity
• Beyond the Cosmological Standard Model
• Covariant Galileon
• Dark Energy after GW170817: dead ends and the road ahead
• Strong constraints on cosmological gravity from GW170817 and GRB 170817A
• 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
• Observational signatures of f(R) dark energy models that satisfy cosmological and local gravity constraints
• Maximal freedom at minimum cost: linear large-scale structure in general modifications of gravity
• Approaches to Understanding Cosmic Acceleration
• Scalar-tensor theories and modified gravity in the wake of GW170817
• A unifying description of dark energy
• Galileon Gravity in Light of ISW, CMB, BAO and $H_0$ data
• Effective Field Theory of Cosmic Acceleration: constraining dark energy with CMB data
• Constraints on scalar-tensor models of dark energy from observational and local gravity tests
• Breaking of Vainshtein screening in scalar-tensor theories beyond Horndeski
• Vainshtein mechanism after GW170817
• Observational constraints on Galileon cosmology
• Matter perturbations in Galileon cosmology
• The observational status of Galileon gravity after Planck
• The fate of large-scale structure in modified gravity after GW170817 and GRB170817A
• Modified gravity inside astrophysical bodies
• Self-accelerating universe in scalar-tensor theories after GW170817
• Effective field theory of modified gravity with two scalar fields: dark energy and dark matter
• A note on the equivalence of a barotropic perfect fluid with a K-essence scalar field
• Chameleon dark energy models with characteristic signatures
• Do current cosmological observations rule out all Covariant Galileons?
• Effective field theory approach to modified gravity including Horndeski theory and Hořava-Lifshitz gravity
• Cosmology in generalized Horndeski theories with second-order equations of motion
• Observational signatures of the theories beyond Horndeski
• Absence of solid angle deficit singularities in beyond-generalized Proca theories

Cited by in corpus (45)

• 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
• Dark Energy Survey Year 1 Results: Constraints on Extended Cosmological Models from Galaxy Clustering and Weak Lensing
• Dark Energy and Modified Gravity in Degenerate Higher-Order Scalar-Tensor (DHOST) theories: a review
• Dark energy in Horndeski theories after GW170817: A review
• Dark Energy in light of Multi-Messenger Gravitational-Wave astronomy
• Implications of a transition in the dark energy equation of state for the $H_0$ and ${\sigma }_8$ tensions
• The Novel Probes Project -- Tests of Gravity on Astrophysical Scales
• Spontaneous scalarization in generalised scalar-tensor theory
• Direct detection of dark energy: the XENON1T excess and future prospects
• Vainshtein regime in Scalar-Tensor gravity: constraints on DHOST theories
• Phenomenology of the generalized cubic covariant Galileon model and cosmological bounds
• Scalar-field dark energy nonminimally and kinetically coupled to dark matter
• Void Lensing as a Test of Gravity
• Cosmological data favor Galileon ghost condensate over $\Lambda$CDM
• Scaling solutions and weak gravity in dark energy with energy and momentum couplings
• Neutron star merger GW170817 strongly constrains doubly coupled bigravity
• Ruling Out New Physics at Low Redshift as a solution to the $H_0$ Tension
• Cosmology in scalar-vector-tensor theories
• Cosmological evolution in DHOST theories
• Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
• Gravitational Collapse in Cubic Horndeski Theories
• On the screening mechanism in DHOST theories evading gravitational wave constraints
• Constraints on massive vector dark energy models from integrated Sachs-Wolfe-galaxy cross-correlations
• General formulation of cosmological perturbations in scalar-tensor dark energy coupled to dark matter
• A systematic procedure to build the beyond generalized Proca field theory
• Dark energy in scalar-vector-tensor theories
• Suppressed cosmic growth in coupled vector-tensor theories
• Probing Modified Gravity with Integrated Sachs-Wolfe CMB and Galaxy Cross-correlations
• Cosmological constraints and phenomenology of a beyond-Horndeski model
• Growth of Matter Perturbations in the Bi-Galileons Field Model
• New scaling solutions in cubic Horndeski theories
• Most general cubic-order Horndeski Lagrangian allowing for scaling solutions and the application to dark energy
• Cosmology with subdominant Horndeski scalar field
• Gauge-ready formulation of cosmological perturbations in scalar-vector-tensor theories
• Growth of non-linear structures and spherical collapse in the Galileon Ghost Condensate model
• Self-tuning kinetic gravity braiding: Cosmological dynamics, shift symmetry, and the tadpole
• Cosmological Decoherence from Thermal Gravitons
• Gravastar model in Randall-Sundrum braneworld
• Gravitational wave signatures from dark sector interactions
• A Bright Future? Prospects for Cosmological Tests of GR with Multimessenger Gravitational Wave Events
• Cosmological Dynamics and Double Screening of DBI Galileon Gravity
• Vainshtein screening in Horndeski theories nonminimally and kinetically coupled to ordinary matter
• Higher order mimetic gravity after GW170817
• Horndeski in motion