Dark matter according to the tensor-four-scalars theory

Details Dark matter according to the tensor-four-scalars theory Dark matter according to the tensor-four-scalars theory

2011-05-09

arxiv.org/abs/1105.1644v2

Physical Review D 84, 084045 (2011)

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

17 pages, no figure

Scientific paper

10.1103/PhysRevD.84.084045

Massive gravity previously constructed as the spin-2 quantum gauge theory leads in the mass zero limit to a modification of general relativity. As a relic from the massive theory a vector field v survives which couples to the metric only. However, the coupling does not involve covariant derivatives so that v must be considered as 4 scalar fields. We analyse the static, spherically symmetric solutions of this theory. From the corresponding geodesics we find the circular velocity profile. Interpreting this as coming from a dark density profile, the theory predicts a flat density core for r going to 0. But the dark density profile is not universal.

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