From Strings Theory to the Dark Matter in Galaxies

Details From Strings Theory to the Dark Matter in Galaxies From Strings Theory to the Dark Matter in Galaxies

1999-05-04

arxiv.org/abs/astro-ph/9905024v1

AIP Conf.Proc.490:382-387,1999

Astronomy and Astrophysics

Astrophysics

6 pages, aipproc.sty latex, one figure. To appear in "Proceedings of the VIII Mexican School of Particles and Fields", Ed. M.

Scientific paper

10.1063/1.1301405

Starting from the effective action of the low energy limit of superstrings theory, I find an exact solution of the field equations which geodesics behavie exactly as the trajectories of stars arround of a spiral galaxy. Here dark matter is of dilatonic origin. It is remarkable that the energy density of this space-time is the same as the used by astronomers to model galaxy stability. Some remarks about a universe dominated by dilatons are pointed out.

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