Observational constraints on massive gravity

Abstract

The ghost free massive gravity modified Friedmann equations at cosmic scale and provided an explanation of cosmic acceleration without dark energy. We analyzed the cosmological solutions of the massive gravity in detail and confronted the cosmological model with current observational data. We found that the model parameters ${\alpha }_3$ and ${\alpha }_4$ which are the coefficients of the third and fourth order nonlinear interactions cannot be constrained by current data at the background level. The mass of graviton is found to be the order of current Hubble constant if ${\alpha }_3={\alpha }_4=0$, and the mass of graviton can be as small as possible in the most general case.

corrected an error in Fig. 2b

References in corpus (14)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Resummation of Massive Gravity
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
• Supernova Constraints and Systematic Uncertainties from the First 3 Years of the Supernova Legacy Survey
• Cosmological perturbations in Massive Gravity and the Higuchi bound
• Self-accelerating Massive Gravity: Exact solutions for any isotropic matter distribution
• Anisotropic Friedmann-Robertson-Walker universe from nonlinear massive gravity
• New Cosmological Solutions in Massive Gravity
• Exact self-accelerating cosmologies in the ghost-free bigravity and massive gravity
• Cosmological solutions of massive gravity on de Sitter
• Cosmology in massive gravity
• Constraining massive gravity with recent cosmological data
• Constraints on massive gravity theory from big bang nucleosynthesis