http://arxiv.org/abs/1412.4073
Tensor-Vector-Scalar (TeVeS) is considered as a viable theory of gravity. It produces the Milgrom’s modified Newtonian dynamics in the nonrelativistic weak field limit and is free from ghosts. We perform the test of TeVeS theory by confronting to cosmological observations. We find that by including a sterile neutrino, it can mimic $\Lambda$CDM model and is compatible with Planck data. But there are tensions between Planck and supernova measurements or recent observations of the kinetic Sunyaev-Zel’dovich effect. We observe that the growth rate in TeVeS theory is scale dependent, which can serve as a potential probe in distinguishing it from $\Lambda$CDM model given future precise observations.
X. Xu, B. Wang and P. Zhang
Mon, 15 Dec 14
48/53
Comments: 14 pages, 5 figures
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