A note on bigravity and dark matter

Details A note on bigravity and dark matter A note on bigravity and dark matter

2008-11-08

arxiv.org/abs/0811.1270v2

Phys.Rev.D79:063515,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, 1 figure, minor corrections and reference additions, published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.79.063515

We show that a class of bi-gravity theories contain solutions describing dark
matter. A particular member of this class is also shown to be equivalent to the
Eddington-Born-Infeld gravity, recently proposed as a candidate for dark
matter. Bigravity theories also have cosmological de Sitter backgrounds and we
find solutions interpolating between matter and acceleration eras.

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