Spherically Symmetric Solutions in Massive Gravity and Constraints from Galaxies

Details Spherically Symmetric Solutions in Massive Gravity and Constraints from Galaxies Spherically Symmetric Solutions in Massive Gravity and Constraints from Galaxies

2011-11-25

arxiv.org/abs/1111.5961v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages, 3 figures

Scientific paper

In this paper, analytical solutions describing static and spherically symmetric sources in the decoupling limit of massive gravity are derived. We analyze the model parameter range and specify when a Vainshtein mechanism is possible. Furthermore, we use gravitational lensing and velocity dispersion data from galaxies to put constraints on the mass scale of the graviton. The result for the inverse graviton mass scale lambda_g = h/(2pi)/(c m_g), in units of the Hubble radius r_H=c/H_0, is of the order lambda_g/r_H > 0.01-0.02 at 95% confidence level.

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