A note on bigravity and dark matter
arXiv:0811.1270 · doi:10.1103/PhysRevD.79.063515
Abstract
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.
4 pages, 1 figure, minor corrections and reference additions, published in Phys. Rev. D
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