An alternative approach to the galactic dark matter problem

Details An alternative approach to the galactic dark matter problem An alternative approach to the galactic dark matter problem

2000-11-14

arxiv.org/abs/gr-qc/0011049v2

Phys.Rev.D63:125016,2001

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

36 pages, 12 figures, Revtex, a brief discussion added, accepted for publication in PRD

Scientific paper

10.1103/PhysRevD.63.125016

We discuss scenarios in which the galactic dark matter in spiral galaxies is described by a long range coherent field which settles in a stationary configuration that might account for the features of the galactic rotation curves. The simplest possibility is to consider scalar fields, so we discuss in particular, two mechanisms that would account for the settlement of the scalar field in a non-trivial configuration in the absence of a direct coupling of the field with ordinary matter: topological defects, and spontaneous scalarization.

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