Spatial Dependence of the Growth Factor in Scalar-Tensor Cosmology

Abstract

Scalar-tensor theories have taken on a key role in attempts to confront the growing open questions in standard cosmology. It is important to understand entirely their dynamics at perturbative level including any possible spatial dependence in their growth of large scale structures. In this work, we investigate the spatial dependence of the growth rate of scalar-tensor theories through the Mészáros equation. We confirm that at subhorizon level this dependence does not play a major role for viable models. However, we establish conditions on which this criterion is met which may be important for developing new models. In our work, we consider three specific models that exhibit spatial dependence of the growth rate at subhorizon modes, which may also be important for early Universe models.

References in corpus (46)

• Planck 2015 results. XIII. Cosmological parameters
• Dynamics of dark energy
• The Cosmological Constant and Dark Energy
• Particle Dark Matter: Evidence, Candidates and Constraints
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Modified Gravity and Cosmology
• f(R) theories
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• Exponential potentials and cosmological scaling solutions
• Laser Interferometer Space Antenna
• Dark Energy after GW170817: dead ends and the road ahead
• Extended Theories of Gravity and their Cosmological and Astrophysical Applications
• The Swampland: Introduction and Review
• Cosmic Growth History and Expansion History
• Black holes, gravitational waves and fundamental physics: a roadmap
• Healthy theories beyond Horndeski
• Horndeski theory and beyond: a review
• Cosmology Intertwined II: The Hubble Constant Tension
• Teleparallel Gravity: From Theory to Cosmology
• Dark Energy vs. Modified Gravity
• Cosmology Intertwined III: $f{\sigma }_8$ and $S_8$
• Teleparallel Theories of Gravity: Illuminating a Fully Invariant Approach
• Matter density perturbations and effective gravitational constant in modified gravity models of dark energy
• Evolution of the $f{\sigma }_8$ tension with the Planck15/$\Lambda$CDM determination and implications for modified gravity theories
• Cosmology With Negative Potentials
• Growth factor in f(T) gravity
• On the growth of linear perturbations
• Can Horndeski Theory be recast using Teleparallel Gravity?
• On the evolution of density perturbations in f(R) theories of gravity
• The Laser Interferometer Space Antenna: Unveiling the Millihertz Gravitational Wave Sky
• TDCOSMO. XII. Improved Hubble constant measurement from lensing time delays using spatially resolved stellar kinematics of the lens galaxy
• Quantifying the $S_8$ tension with the Redshift Space Distortion data set
• Constraining $f(T,\mathcal{T})$ gravity models using type Ia supernovae
• Reconstructing teleparallel gravity with cosmic structure growth and expansion rate data
• Growth factor in $f(T,\mathcal{T})$ gravity
• Constraints on growth index parameters from current and future observations
• A parametrization for the growth index of linear matter perturbations
• Symmetric Teleparallel Horndeski Gravity
• Precision growth index using the clustering of cosmic structures and growth data
• The phenomenology of beyond Horndeski gravity
• Imprints of interacting dark energy on cosmological perturbations
• 50 Years of Horndeski Gravity: Past, Present and Future
• Cosmic Growth in $f(T)$ Teleparallel Gravity

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