90 citations · 142 across the 6 of their papers we have counts for
9 papers · 1 filter
Cosmological Perturbation Theory in Metric-Affine Gravity
Katsuki Aoki, Sebastian Bahamonde, Jorge Gigante Valcarcel +1
We formulate cosmological perturbation theory around the spatially curved FLRW background in the context of metric-affine gauge theory of gravity which includes torsion and nonmetr…
Non-uniqueness of massless transverse-traceless graviton
Katsuki Aoki, Francesco Di Filippo, Shinji Mukohyama
We study a theory of minimally modified gravity called cuscuton/VCDM that propagates only two gravitational degrees of freedom. Despite being apparently different from general rela…
A consistent theory of Einstein-Gauss-Bonnet gravity
Katsuki Aoki, Mohammad Ali Gorji, Shinji Mukohyama
We investigate the limit of the -dimensional Einstein-Gauss-Bonnet gravity, where the limit is taken with kept fixed and is the original…
Metric-affine Gravity and Inflation
Keigo Shimada, Katsuki Aoki, Kei-ichi Maeda
We classify the metric-affine theories of gravitation, in which the metric and the connections are treated as independent variables, by use of several constraints on the connection…
Phenomenology in type-I minimally modified gravity
Katsuki Aoki, Antonio De Felice, Chunshan Lin +2
We study cosmology in a class of minimally modified gravity (MMG) with two local gravitational degrees of freedom. We classify modified gravity theories into type-I and type-II: th…
Galileon and generalized Galileon with projective invariance in a metric-affine formalism
Katsuki Aoki, Keigo Shimada
We study scalar-tensor theories respecting the projective invariance in the metric-affine formalism. The metric-affine formalism is a formulation of gravitational theories such tha…