34 citations · 55 across the 5 of their papers we have counts for
5 papers
Invisible Un-removable Field: A Search by Ultra-High Energy Cosmic Rays
Humitaka Sato
A Toy model which introduces the different limiting velocities for each particleis discussed: the differentiation of the universal limiting velocity is implemented throgh the coupl…
Ultra-High Energy Cosmic Rays and Absolute Reference Frame defined by External Field
Humitaka Sato
High-energy end of the cosmic-ray spectrum has provided us to check a validity of the Lorentz Invariance and the Relativity principle, through the observation of the so-called GZK…
Extremely High Energy and Violation of Lorentz Invariance
Humitaka Sato
Extremely high-energy(EHE) cosmic rays might provide a chance to check a violation of the Lorentz symmetry of spacetime. Some theoretical consideration is described about why the L…
Evolution of Small Scale Cosmological Baryon Perturbations and Matter Transfer Functions
Kazuhiro Yamamoto, Naoshi Sugiyama, Humitaka Sato
The evolution of small scale cosmological perturbations is carefully re-examined. Through the interaction with photons via electrons, baryon perturbations show interesting behavior…
Cosmological Baryon Sound Waves Coupled with the Primeval Radiation
Kazuhiro Yamamoto, Naoshi Sugiyama, Humitaka Sato
The fluid equations for the baryon-electron system in an expanding universe are derived from the Boltzmann equation. The effect of the Compton interaction is taken into account pro…