String theory explanation of galactic rotation

Details String theory explanation of galactic rotation String theory explanation of galactic rotation

2010-03-05

arxiv.org/abs/1003.1309v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Note change in title from: Scalar-tensor explanation of galactic rotation, to: String theory explanation of galactic rotation,

Scientific paper

The unique spherically symmetric metric which has vanishing weyl tensor, is asymptotically desitter, and can model constant galactic rotation curves is presented. Two types of field equations are shown to have this metric as an exact solution. The first is palatini varied scalar-tensor theory. The second is the low energy limit of string theory modified by inclusion of a contrived potential.

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