Cosmological constraints on the Hu-Sawicki modified gravity scenario

Abstract

In this paper we place new constraints on a f(R) modified gravity model recently proposed by Hu and Sawicki. After checking that the Hu and Sawicki model produces a viable cosmology, i.e. a matter dominated epoch followed by a late-time acceleration, we constrain some of its parameters by using recent observations from the UNION compilation of luminosity distances of Supernovae type Ia, including complementary information from Baryonic Acoustic Oscillations, Hubble expansion, and age data. We found that the data considered is unable to place significant constraints on the model parameters and we discuss the impact of a different assumption of the background model in cosmic parameters inference.

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• Generic feature of future crossing of phantom divide in viable $f(R)$ gravity models
• Dark energy: investigation and modeling
• Future Oscillations around Phantom Divide in f(R) Gravity
• New Constraints On The Dark Energy Equation of State
• Cosmological Evolution for Dark Energy Models in f(T) Gravity
• Background cosmological dynamics in $f(R)$ gravity and observational constraints
• On the current status of Modified Gravity
• Quasinormal modes, thermodynamics and shadow of black holes in Hu-Sawicki f(R) gravity theory
• Equations of State in the Brans-Dicke cosmology
• Cosmology with Hu-Sawicki gravity in Palatini Formalism
• Modified Gravity: the CMB, Weak Lensing and General Parameterisations
• Parameterizing scalar-tensor theories for cosmological probes
• Spatial Curvature in $f(R)$ Gravity
• $\text{fRevolution}$ $-$ Relativistic Cosmological Simulations in $f(R)$ Gravity I: Methodology
• Future constraints on the Hu-Sawicki modified gravity scenario
• An updated analysis of two classes of f(R) theories of gravity
• Primordial Black Hole Merger Rate in $f(R)$ Gravity
• Simultaneous effect of Modified Gravity and Primordial Non-Gaussianity in Large Scale Structure Observations
• The Galaxy Halo Connection in Modified Gravity Cosmologies: Environment Dependence of Galaxy Luminosity function
• On the cosmological viability of the Hu-Sawicki type modified induced gravity
• $\Lambda$CDM, $\Lambda$DGP and extended phantom-like cosmologies
• Investigating the effects of gravitational lensing by Hu-Sawicki $\mathbf{f}(\mathbf{R})$ gravity black holes