26 citations · 71 across the 6 of their papers we have counts for
6 papers
Non-minimal Scalar Effective Cosmology
Callum Hunter, Michael Kenna-Allison
In this work we investigate the most general non-minimally coupled symmetric scalar-tensor effective field theory (EFT) of gravity up to dimension six in the operato…
Vainshtein Mechanism in Generalised Massive Gravity
A. Emir Gumrukcuoglu, Rampei Kimura, Michael Kenna-Allison +1
We present a non-linear analysis of perturbations around cosmological solutions in Generalised Massive gravity. This Lorentz invariant theory is an extension of de Rham, Gabadadze,…
Cosmic Acceleration and Growth of Structure in Massive Gravity
Michael Kenna-Allison, A. Emir Gumrukcuoglu, Kazuya Koyama
We introduce a cosmological model in the framework of Generalised Massive Gravity. This theory is an extension of non-linear massive gravity with a broken translation symmetry in t…
Stable Cosmology in Generalised Massive Gravity
Michael Kenna-Allison, A. Emir Gumrukcuoglu, Kazuya Koyama
We present a thorough analysis of the cosmological perturbations in Generalised Massive Gravity. This is an extension of de Rham-Gabadadze-Tolley theory where the translation invar…
On the viability of bigravity cosmology
Michael Kenna-Allison, A. Emir Gumrukcuoglu, Kazuya Koyama
We revisit the question of viability of bigravity cosmology as a candidate for dark energy. In the context of the low energy limit model, where matter couples to a single metric, w…
Stellar Pulsations in Beyond Horndeski Gravity Theories
Jeremy Sakstein, Michael Kenna-Allison, Kazuya Koyama
Theories of gravity in the beyond Horndeski class recover the predictions of general relativity in the solar system whilst admitting novel cosmologies, including late-time de Sitte…