Matter bispectrum in cubic Galileon cosmologies

Abstract

In this paper we obtain the bispectrum of dark matter density perturbations in the frame of covariant cubic Galileon theories. This result is obtained by means of a semi-analytic approach to second-order perturbations in Galileon cosmologies, assuming Gaussian initial conditions. In particular, we show that, even in the presence of large deviations of the linear growth-rate w.r.t. the ΛCDM one, at the bispectrum level such deviations are reduced to a few percent.

38 pages, 8 figures. Minor changes. References added. Published version

References in corpus (20)

• Covariant Galileon
• Generalized Galileons: All scalar models whose curved background extensions maintain second-order field equations and stress tensors
• G-inflation: inflation driven by the Galileon field
• Galilean Genesis: an alternative to inflation
• Galileon Cosmology
• Galileon inflation
• Cosmology and the Bispectrum
• DBI and the Galileon reunited
• Higgs G-inflation
• Observational constraints on Galileon cosmology
• Bi-galileon theory I: motivation and formulation
• Primordial non-Gaussianity from the DBI Galileons
• Matter perturbations in Galileon cosmology
• Modified gravity a la Galileon: Late time cosmic acceleration and observational constraints
• Linear perturbations in Galileon gravity models
• Dynamical analysis of generalized Galileon cosmology
• Subluminal Galilean Genesis
• Time-dependent spherically symmetric covariant Galileons
• Potential-driven Galileon inflation
• Three-Point Correlations in f(R) Models of Gravity

Cited by in corpus (46)

• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: RSD measurement from the power spectrum and bispectrum of the DR12 BOSS galaxies
• Nonlinear structure formation in the Cubic Galileon gravity model
• The observational status of Galileon gravity after Planck
• Spherical collapse in Galileon gravity: fifth force solutions, halo mass function and halo bias
• Simulating the quartic Galileon gravity model on adaptively refined meshes
• The parameter space in Galileon gravity models
• Constraining models of $f(R)$ gravity with Planck and WiggleZ power spectrum data
• Halo model and halo properties in Galileon gravity cosmologies
• Galaxy redshift-space bispectrum: the Importance of Being Anisotropic
• Screening the fifth force in the Horndeski's most general scalar-tensor theories
• Joint analysis of anisotropic power spectrum, bispectrum and trispectrum: application to N-body simulations
• Cosmology in generalized Horndeski theories with second-order equations of motion
• Dynamical Analysis of an Integrable Cubic Galileon Cosmological Model
• Signatures of Horndeski gravity on the Dark Matter Bispectrum
• Non-linear evolution of the BAO scale in alternative theories of gravity
• Parametrized modified gravity constraints after Planck
• Bispectrum of cosmological density perturbations in the most general second-order scalar-tensor theory
• Consistency relations for large-scale structure in modified gravity and the matter bispectrum
• Analytic Gaussian Covariance Matrices for Galaxy $N$-Point Correlation Functions
• Probing Modified Gravity Theories with ISW and CMB Lensing
• New constraints on cosmological modified gravity theories from anisotropic three-point correlation functions of BOSS DR12 galaxies
• Third order solutions of the cosmological density perturbations in the Horndeski's most general scalar-tensor theory with the Vainshtein mechanism
• Cosmological constraints and phenomenology of a beyond-Horndeski model
• Quantum Stability of Generalized Proca Theories
• Integrated trispectrum detection from BOSS DR12 NGC CMASS
• Weak lensing probe of cubic Galileon model
• The Integrated Bispectrum in Modified Gravity Theories
• Probing scalar tensor theories for gravity in redshift space
• Consistency Relations in Effective Field Theory
• An analytic halo approach to the bispectrum of galaxies in redshift space
• Tackling non-linearities with the effective field theory of dark energy and modified gravity
• The Shape Dependence of Vainshtein Screening in the Cosmic Matter Bispectrum
• Higher multipoles of the galaxy bispectrum in redshift space
• A study on Cubic Galileon Gravity Using N-body Simulations
• 21 cm power spectrum in interacting cubic Galileon model
• First and second order cosmological perturbations in light mass Galileon models
• The parameter space of Cubic Galileon models for cosmic acceleration
• First test of the consistency relation for the large-scale structure using the anisotropic three-point correlation function of BOSS DR12 galaxies (An explanatory video is available at https://youtu.be/Zi36ooLPhss.)
• GEO-FPT: a model of the galaxy bispectrum at mildly non-linear scales
• Consistency of Cubic Galileon Cosmology: Model-Independent Bounds from Background Expansion and Perturbative Analyses
• Late-time acceleration in the coupled Cubic Galileon models
• Covariant Effective Action for Generalized Proca Theories
• Non-Gaussianity in DHOST inflation
• A Model for the Redshift-Space Galaxy 4-Point Correlation Function
• Baryonic effects in the Effective Field Theory of Large-Scale Structure and an analytic recipe for lensing in CMB-S4
• Probing gravity beyond general relativity with bispectrum multipoles of cosmological tracers: I. Theoretical Foundations