10.4k citations
- The University of TokyoJP1.4k papers
- Kavli Institute for the Physics and Mathematics of the UniverseJP427 papers
- High Energy Accelerator Research OrganizationJP400 papers
- Kyoto UniversityJP370 papers
- Nagoya UniversityJP271 papers
- National Astronomical Observatory of JapanJP242 papers
- Kobe UniversityJP197 papers
- Tokyo Institute of TechnologyJP196 papers
- Tohoku UniversityJP195 papers
- University of WashingtonUS185 papers
- Boston UniversityUS171 papers
- Stony Brook UniversityUS171 papers
8 papers · 1 filter
Isocurvature and Adiabatic Fluctuations of Axion in Chaotic Inflation Models and Large Scale Structure
M. Kawasaki, Naoshi Sugiyama, T. Yanagida
In the chaotic inflation models, quantum fluctuations for axion fields lead to the overproduction of domain walls and too large isocurvature fluctuations which is inconsistent with…
Atmospheric Neutrinos
M. Honda, T. Kajita, K. Kasahara +1
The atmospheric neutrino-flux is calculated over the wide energy range from 1 GeV to 3,000 GeV for the study of neutrino-physics using the data from underground neutrino-detectors.…
Can Decaying Particles Raise the Upperbound on the Peccei-Quinn Scale?
M. Kawasaki, T. Moroi, T. Yanagida
We have reexamine the effect of entropy production on the cosmic axion density and find that the Peccei-Quinn scale larger than about ~GeV is not allowed even if lar…
-- mixing and parameter in the minimal supergravity model
Toru Goto, Takeshi Nihei, Yasuhiro Okada
\bb mixing and a CP violation parameter in \kk mixing are studied in the minimal supergravity model. We solve the one-loop renormalization group equations for the minimal sup…
Constraint on the Reheating Temperature from the Decay of the Polonyi Field
M. Kawasaki, T. Moroi, T. Yanagida
We study the Polonyi problem in the framework of no-scale type supergravity models. We show that the lightest superparticle (LSP) produced in the decay of the Polonyi field may con…
How natural is a small but nonzero cosmological constant?
Yasunori Fujii
Based on our previous attempt, we propose a better way to understand a small but nonzero cosmological constant, as indicated by a number of recent observational studies. We re-exam…