247 citations · 2k across the 37 of their papers we have counts for
3 papers · 1 filter
Hamiltonian structure of scalar-tensor theories beyond Horndeski
Chunshan Lin, Shinji Mukohyama, Ryo Namba +1
We study the nature of constraints and the Hamiltonian structure in a scalar-tensor theory of gravity recently proposed by Gleyzes, Langlois, Piazza and Vernizzi (GLPV). For the si…
Cosmology in rotation-invariant massive gravity with non-trivial fiducial metric
David Langlois, Shinji Mukohyama, Ryo Namba +1
We investigate the cosmology of SO(3)-invariant massive gravity with 5 degrees of freedom. In contrast with previous studies, we allow for a non-trivial fiducial metric, which can…
Blue Tensor Spectrum from Particle Production during Inflation
Shinji Mukohyama, Ryo Namba, Marco Peloso +1
We discuss a mechanism of particle production during inflation that can result in a blue gravitational wave (GW) spectrum, compatible with the BICEP2 result and with the r < 0.11 l…