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Bimetric gravity is cosmologically viable

Bimetric theory describes gravitational interactions in the presence of an extra spin-2 field. Previous work has suggested that its cosmological solutions are generically plagued by instabilities. We show that by taking the Planck mass for the second metric, Mf, to be small, these instabilities can...

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Main Authors: Akrami, Yashar (Author) , Hassan, S. F. (Author) , Könnig, Frank (Author) , Schmidt-May, Angnis (Author) , Solomon, Adam (Author)
Format: Article (Journal)
Language:English
Published: 29 June 2015
In: Physics letters
Year: 2015, Volume: 748, Pages: 37-44
ISSN:1873-2445
DOI:10.1016/j.physletb.2015.06.062
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2015.06.062
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269315004840
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Author Notes:Yashar Akrami, S.F. Hassan, Frank Könnig, Angnis Schmidt-May, Adam R. Solomon

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