176 citations · 271 across the 3 of their papers we have counts for
3 papers
gr-qc2015★ 176 cited
Bimetric gravity is cosmologically viable
Yashar Akrami, S. F. Hassan, Frank Könnig +2
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 b…
astro-ph.CO2015★ 61 cited
Higuchi Ghosts and Gradient Instabilities in Bimetric Gravity
Frank Könnig
Bimetric gravity theories allow for many different types of cosmological solutions, but not all of them are theoretically allowed. In this work we discuss the conditions to satisfy…
astro-ph.CO2014★ 34 cited
Cosmological viability of massive gravity with generalized matter coupling
Adam R. Solomon, Jonas Enander, Yashar Akrami +3
There is a no-go theorem forbidding flat and closed FLRW solutions in massive gravity on a flat reference metric, while open solutions are unstable. Recently it was shown that this…