Cosmological perturbation and matter power spectrum in bimetric massive gravity
arXiv:1701.00811 · doi:10.1016/j.aop.2018.02.001
Abstract
We discuss the linear perturbation equations with the synchronous gauge in a minimal scenario of the bimetric massive gravity theory. We find that the matter density perturbation and matter power spectrum are suppressed. We also examine the ghost and stability problems and show that the allowed deviation of this gravitational theory from the cosmological constant is constrained to be smaller than by the large scale structure observational data.
18 pages, 4 figures, revised version accepted by Annals of Physics
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