Scalar fields properties for flat galactic rotation curves

Abstract

The whole class of minimally coupled and massive scalar fields which may be responsible for flattening of galactic rotation curves is found. An interesting relation with a class of scalar-tensor theories able to isotropise anisotropic models of Universe is shown. The resulting metric is found and its stability and scalar field properties are tested with respect to the presence of a second scalar field or a small perturbation of the rotation velocity at galactic outer radii.

10 pages

References in corpus (2)

• Isotropisation of Generalized Scalar-Tensor theory plus a massive scalar field in the Bianchi type I model
• Isotropisation of Bianchi class A models with curvature for a minimally coupled scalar tensor theory

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