Here is Daisuke Ida's home page.
Recent Works:
* Daisuke Ida, Takahiro Okamoto:
You Cannot Press Out the Black Hole (pdf)
As the title indicates, it is shown that a ball-shaped black hole
cannot be pressed out into a doughnuts-shaped black hole.
Daisuke Ida, Akihiro Ishibashi, Tetsuya Shiromizu:
Topology and Uniqueness of Higher Dimensional Black Holes (pdf)
A review article on higher dimensional black holes
to appear in Prog. Theor. Phys. Suppl.
* Daisuke Ida:
On the Topology of Black Lenses (pdf)
We discuss the topological structure of black hole space-times
with the event horizon diffeomorphic with the Lens space.
* Masaru Siino, Daisuke Ida:
Half Period Theorem of Binary Black Holes (pdf)
We give a Theorem claiming that binary black holes cannot
orbit
for the half period before
their event horizons merge into one.
Address: Department of Physics, Gakushuin University,
Tokyo 171-8588, Japan
Phone: +81 3 3986 0221 (ext 6483)
E-mail: daisuke.ida@gakushuin.ac.jp