127 citations · 241 across the 7 of their papers we have counts for
4 papers · 1 filter
Trans-Planckian censorship and single-field inflaton potential
Kenji Kadota, Chang Sub Shin, Takahiro Terada +1
It was recently proposed that a field theory cannot be consistent with quantum gravity if it allows a mode shorter than the Planck length to exit the Hubble horizon. This is called…
Clustering of primordial black holes formed in a matter-dominated epoch
Takahiko Matsubara, Takahiro Terada, Kazunori Kohri +1
In the presence of the local-type primordial non-Gaussianity, it is known that the clustering of primordial black holes (PBHs) emerges even on super-horizon scales at the formation…
Bouncing Universe from Nothing
Hiroki Matsui, Fuminobu Takahashi, Takahiro Terada
We find a class of solutions for a homogeneous and isotropic universe in which the initially expanding universe stops expanding, experiences contraction, and then expands again (th…
Prospective constraints on the primordial black hole abundance from the stochastic gravitational-wave backgrounds produced by coalescing events and curvature perturbations
Sai Wang, Takahiro Terada, Kazunori Kohri
For a variety of on-going and planned gravitational-wave (GW) experiments, we study expected constraints on the fraction () of primordial black holes (PBHs) in dark ma…