Phys. Rev. D 79, 063515 (2009) [5 pages]Note on bigravity and dark matterReceived 25 November 2008; revised 22 February 2009; published 18 March 2009 We show that a class of bigravity 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.79.063515
DOI:
10.1103/PhysRevD.79.063515
PACS:
98.80.Cq, 95.35.+d
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