Is dark matter an extra-dimensional effect?

Details Is dark matter an extra-dimensional effect? Is dark matter an extra-dimensional effect?

2008-09-11

arxiv.org/abs/0809.1915v2

Mod.Phys.Lett.A24:667-682,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, no figures, accepted for publication in MPLA; references added

Scientific paper

10.1142/S0217732309028667

We investigate the possibility that the observed behavior of test particles outside galaxies, which is usually explained by assuming the presence of dark matter, is the result of the dynamical evolution of particles in higher dimensional space-times. Hence, dark matter may be a direct consequence of the presence of an extra force, generated by the presence of extra-dimensions, which modifies the dynamic law of motion, but does not change the intrinsic properties of the particles, like, for example, the mass (inertia). We discuss in some detail several possible particular forms for the extra force, and the acceleration law of the particles is derived. Therefore, the constancy of the galactic rotation curves may be considered as an empirical evidence for the existence of the extra dimensions.

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