423 citations · 1.8k across the 30 of their papers we have counts for
3 papers · 1 filter
Coleman-de Luccia instanton in dRGT massive gravity
Ying-li Zhang, Ryo Saito, Dong-han Yeom +1
We study the Coleman-de Luccia (CDL) instanton characterizing the tunneling from a false vacuum to the true vacuum in a semi-classical way in dRGT (deRham-Gabadadze-Tolley) massive…
Localized Features in Non-Gaussianity from Heavy Physics
Ryo Saito, Yu-ichi Takamizu
We discuss the possibility that we could obtain some hints of the heavy physics during inflation by analyzing local features of the primordial bispectrum. A heavy scalar field coul…
Testing general scalar-tensor gravity and massive gravity with cluster lensing
Tatsuya Narikawa, Tsutomu Kobayashi, Daisuke Yamauchi +1
We explore the possibility of testing modified gravity exhibiting the Vainshtein mechanism against observations of cluster lensing. We work in the most general scalar-tensor theory…