Current status of modified gravity

2014/07/31 by Lotfi Boubekeur, Elena Giusarma, Olga Mena +2
Earth and Planetary Sciences · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Current (fluid) #Environmental science #Geophysics and Gravity Measurements #Physics #Thermodynamics #astro-ph.CO #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.90.103512

published as Phys. Rev. D 90, 103512 (2014) · 11 pages, 6 figures and 2 Tables. Final published version in the PRD journal

arxiv created 2014/10/27 · openalex publication_date 2014/11/11 · arxiv updated 2014/11/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We revisit the cosmological viability of the Hu-Sawicki modified gravity scenario. The impact of such a modification on the different cosmological observables, including gravitational waves, is carefully described. The most recent cosmological data, as well as constraints on the relationship between the clustering parameter \ensuremathσ₈ and the current matter mass-energy density \mathrm\ensuremathΩ_m from cluster number counts and weak lensing tomography, are considered in our numerical calculations. The strongest bound we find is |f_R0|<3.7\ifmmode×\else\texttimes\fi10^\ensuremath-6 at 95% C.L. Forthcoming cluster surveys covering 10 000 deg² in the sky, with galaxy surface densities of O(10) arcmin^\ensuremath-2 could improve the precision in the \ensuremathσ₈-\mathrm\ensuremathΩ_m relationship, tightening the above constraint.

Citations

• SUPERNOVA CONSTRAINTS AND SYSTEMATIC UNCERTAINTIES FROM THE FIRST THREE YEARS OF THE SUPERNOVA LEGACY SURVEY
• Weak Gravitational Lensing of the CMB
• Can dark energy viscosity be detected with the Euclid survey?
• NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE ( WMAP ) OBSERVATIONS: FINAL MAPS AND RESULTS
• Testing gravity against the early time integrated Sachs-Wolfe effect
• Dark Energy versus Modified Gravity
• Observational Probes of Cosmic Acceleration
• The cosmological constant and dark energy
• Generalized Chaplygin gas, accelerated expansion, and dark-energy-matter unification
• THEHUBBLE SPACE TELESCOPECLUSTER SUPERNOVA SURVEY. V. IMPROVING THE DARK-ENERGY CONSTRAINTS ABOVEz> 1 AND BUILDING AN EARLY-TYPE-HOSTED SUPERNOVA SAMPLE
• Dynamics of dark energy
• Probing Gravity at Cosmological Scales by Measurements which Test the Relationship between Gravitational Lensing and Matter Overdensity
• Evidence of the accelerated expansion of the Universe from weak lensing tomography with COSMOS
• Is cosmic speed-up due to new gravitational physics?
• Toward a Halo Mass Function for Precision Cosmology: The Limits of Universality
• Detection ofB-Mode Polarization at Degree Angular Scales by BICEP2
• Dynamics of linear perturbations inf(R)gravity
• Distinguishing modified gravity from dark energy