155 citations · 894 across the 30 of their papers we have counts for
3 papers · 1 filter
Formation of Massive and Wide First-star Binaries in Radiation Hydrodynamics Simulations
Kazuyuki Sugimura, Tomoaki Matsumoto, Takashi Hosokawa +2
We study the formation of Pop III stars by performing radiation hydrodynamics simulations for three different initial clouds extracted from cosmological hydrodynamics simulations.…
Bispectrum from open inflation
Kazuyuki Sugimura, Eiichiro Komatsu
We calculate the bispectrum of primordial curvature perturbations, ζ, generated during "open inflation." Inflation occurs inside a bubble nucleated via quantum tunneling from the b…
Non-Gaussian bubbles in the sky
Kazuyuki Sugimura, Daisuke Yamauchi, Misao Sasaki
We point out a possible generation mechanism of non-Gaussian bubbles in the sky due to bubble nucleation in the early universe. We consider a curvaton scenario for inflation and as…