37 citations · 91 across the 5 of their papers we have counts for
5 papers
Double Inflation in Supergravity and the Boomerang Observations
Toshiyuki Kanazawa, Masahiro Kawasaki, Naoshi Sugiyama +1
One of the biggest mystery of the recent observation of cosmic microwave background anisotropies by the boomerang team is insignificance of the second acoustic peak in the angular…
Double inflation in supergravity and the primordial black hole formation
Toshiyuki Kanazawa, M. Kawasaki, T. Yanagida
We study a double inflation model (a hybrid inflation + a new inflation) in supergravity and discuss the formation of primordial black holes (PBHs) with mass \sim 10^{-20}-10^{5}M_…
Double Inflation in Supergravity and the Large Scale Structure
Toshiyuki Kanazawa, M. Kawasaki, Naoshi Sugiyama +1
The cosmological implication of a double inflation model with hybrid + new inflations in supergravity is studied. The hybrid inflation drives an inflaton for new inflation close to…
Observational Implications of Axionic Isocurvature Fluctuations
Toshiyuki Kanazawa, M. Kawasaki, Naoshi Sugiyama +1
The axion is the most attractive candidate to solve the strong CP problem in QCD. If it exists, the inflationary universe produces axion fluctuations which are mixtures of isocurva…
Isocurvature Fluctuations of the M-theory Axion in a Hybrid Inflation Model
Toshiyuki Kanazawa, M. Kawasaki, Naoshi Sugiyama +1
The M-theory, the strong-coupling heterotic string theory, presents various interesting new phenomenologies. The M-theory bulk axion is one of these. The decay constant in this con…