181 citations · 846 across the 29 of their papers we have counts for
4 papers · 2 filters
Constraints on general second-order scalar-tensor models from gravitational Cherenkov radiation
Rampei Kimura, Kazuhiro Yamamoto
We demonstrate that the general second-order scalar-tensor theories, which have attracted attention as possible modified gravity models to explain the late time cosmic acceleration…
Vainshtein screening in a cosmological background in the most general second-order scalar-tensor theory
Rampei Kimura, Tsutomu Kobayashi, Kazuhiro Yamamoto
A generic second-order scalar-tensor theory contains a nonlinear derivative self-interaction of the scalar degree of freedom à la Galileon models, which allows for the Vainshte…
Observational Constraints on Kinetic Gravity Braiding from the Integrated Sachs-Wolfe Effect
Rampei Kimura, Tsutomu Kobayashi, Kazuhiro Yamamoto
The cross-correlation between the integrated Sachs-Wolfe (ISW) effect and the large scale structure (LSS) is a powerful tool to constrain dark energy and alternative theories of gr…
Halo models in modified gravity theories with self-accelerated expansion
Tatsuya Narikawa, Rampei Kimura, Tatsunosuke Yano +1
We investigate the structure of halos in the sDGP (self-accelerating branch of the Dvali-Gavadadze-Porrati braneworld gravity) model and the galileon modified gravity model on the…