423 citations · 1.8k across the 30 of their papers we have counts for
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hep-ph2010★ 18 cited
Primordial Black Hole as a Source of the Boost Factor
Ryo Saito, Satoshi Shirai
Primordial black holes (PBHs) accumulate weakly interacting massive particles (WIMPs) around them and form ultracompact minihalos (UCMHs), if the WIMP is a dominant component of th…
astro-ph.CO2010★ 39 cited
The effect of varying sound velocity on primordial curvature perturbations
Masahiro Nakashima, Ryo Saito, Yu-ichi Takamizu +1
We study the effects of sudden change in the sound velocity on primordial curvature perturbation spectrum in inflationary cosmology, assuming that the background evolution satisfie…