Testing modified gravity models with recent cosmological observations

Abstract

We explore the cosmological implications of five modified gravity (MG) models by using the recent cosmological observational data, including the recently released SNLS3 type Ia supernovae sample, the cosmic microwave background anisotropy data from the Wilkinson Microwave Anisotropy Probe 7-yr observations, the baryon acoustic oscillation results from the Sloan Digital Sky Survey data release 7, and the latest Hubble constant measurement utilizing the Wide Field Camera 3 on the Hubble Space Telescope. The MG models considered include the Dvali-Gabadadze-Porrati(DGP) model, two $f(R)$ models, and two $f(T)$ models. We find that compared with the $\Lambda$CDM model, MG models can not lead to a appreciable reduction of the ${\chi }_{min}^2$. The analysis of AIC and BIC shows that the simplest cosmological constant model($\Lambda$CDM) is still most preferred by the current data, and the DGP model is strongly disfavored. In addition, from the observational constraints, we also reconstruct the evolutions of the growth factor in these models. We find that the current available growth factor data are not enough to distinguish these MG models from the $\Lambda$CDM model.

31 pages, 6 figures, 2 tables

References in corpus (31)

• Dynamics of dark energy
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Quantum Gravity at a Lifshitz Point
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Disappearing cosmological constant in f(R) gravity
• Dark torsion as the cosmic speed-up
• Einstein's Other Gravity and the Acceleration of the Universe
• Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves
• Supernova Constraints and Systematic Uncertainties from the First 3 Years of the Supernova Legacy Survey
• A test of the nature of cosmic acceleration using galaxy redshift distortions
• SNLS3: Constraints on Dark Energy Combining the Supernova Legacy Survey Three Year Data with Other Probes
• Observational signatures of f(R) dark energy models that satisfy cosmological and local gravity constraints
• The Hubble Diagram to Redshift >6 from 69 Gamma-Ray Bursts
• 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
• The 2dF-SDSS LRG and QSO Survey: QSO clustering and the L-z degeneracy
• Growth factor in f(T) gravity
• Testing LCDM with the Growth Function δ(a): Current Constraints
• The 2dF-SDSS LRG and QSO Survey: The LRG 2-Point Correlation Function and Redshift-Space Distortions
• Cosmological Constraints on f(R) Acceleration Models
• Statefinder Diagnostic and w-w' Analysis for the Agegraphic Dark Energy Models without and with Interaction
• Large-Scale Tests of the DGP Model
• Constraining Dark Energy Anisotropic Stress
• Observational constraints on the linear fluctuation growth rate
• Growth factor parametrization and modified gravity
• Nonlinear growth in modified gravity theories of dark energy
• Yang-Mills condensate dark energy coupled with matter and radiation
• f(R) Gravity and its Cosmological Implications
• The growth factor of matter perturbations in an f(R) gravity

Cited by in corpus (1)

• Effects of a time-varying color-luminosity parameter $\beta$ on the cosmological constraints of modified gravity models