21 citations · 29 across the 3 of their papers we have counts for
3 papers
Asymptotic behavior of null geodesics near future null infinity. III. Photons towards inward directions
Masaya Amo, Keisuke Izumi, Yoshimune Tomikawa +2
A new sufficient condition for photons emitted near future null infinity to reach future null infinity is derived by studying null geodesics in the Bondi coordinates in asymptotica…
On uniqueness of static black hole with conformal scalar hair
Yoshimune Tomikawa, Tetsuya Shiromizu, Keisuke Izumi
We discuss the uniqueness of the static black hole in the Einstein gravity with a conformally coupled scalar field. In particular, we prove the uniqueness of the region outside of…
Wormhole on DGP brane
Yoshimune Tomikawa, Tetsuya Shiromizu, Keisuke Izumi
We analyze a spacetime structure on a new brane configuration constructed recently in the Dvali-Gabadadze-Porrati braneworld context. The brane, embedded on a five-dimensional bubb…