6 citations · 7 across the 4 of their papers we have counts for
4 papers
Stochastic Gravitational Wave Background in Brane World Cosmology
Kiyotomo Ichiki, Kouji Nakamura
We investigate the cosmological evolution of gravitational waves in Friedman-Robertson-Walker brane world models embedded in a five dimensional anti de-Sitter spacetime. To predict…
General framework of higher order gauge invariant perturbation theory
Kouji Nakamura
Based on the gauge invariant variables proposed in [K. Nakamura, Prog. Theor. Phys. vol.110 (2003), 723.], general framework of the second order gauge invariant perturbation theory…
Two interacting hard disks within a circular cavity: towards a quantal equation of states
T. Kato, N. Nakazono, K. Nakamura
We investigate a circular cavity billiard within which a pair of identical hard disks of smaller but finite size is confined. Each disk shows a free motion except when bouncing ela…
Continuous Limit of Multiple Gravitational Lens Effect and Average Magnification Factor
Hiroshi Yoshida, Kouji Nakamura, Minoru Omote
We show that the gravitational magnification factor averaged over all configurations of lenses in a locally inhomogeneous universe satisfy a second order differential equation with…