Toroidal Spiral Nambu-Goto Strings around Higher-Dimensional Black Holes (2009)
Igata, Takahisa, Ishihara, Hideki
We present solutions of the Nambu-Goto equation for test strings in a shape of toroidal spiral in five-dimensional spacetimes. In particular, we show that stationary toroidal spirals exist around the...
Geodetic Precession in Squashed Kaluza-Klein Black Hole Spacetimes (2009)
Matsuno, Ken, Ishihara, Hideki
We investigate the geodetic precession effect of a parallely transported spin-vector along a circular geodesic in the five-dimensional squashed Kaluza-Klein black hole spacetime. Then we derive the...
Exactly solvable strings in the Minkowski spacetime (2009)
Kozaki, Hiroshi, Koike, Tatsuhiko, Ishihara, Hideki
We study the integrability of the equations of motion for the Nambu-Goto strings with a cohomogeneity-one symmetry in the Minkowski spacetime. A cohomogeneity-one string has a world surface which is...
Topology Changing Process of Coalescing Black Holes on Eguchi-Hanson Space (2009)
Kimura, Masashi, Ishihara, Hideki, Tomizawa, Shinya, Yoo, Chul-Moon
We numerically study the event horizons of two kinds of five-dimensional coalescing black hole solutions with different asymptotic structures: the five-dimensional Kastor-Traschen solution (5DKT) and...
Hoop Conjecture and the Horizon Formation Cross-Section in Kaluza-Klein Spacetimes (2009)
Yoo, Chul-moon, Ishihara, Hideki, Kimura, Masashi, Tanzawa, Sugure
We analyze momentarily static initial data sets of the gravitational field produced by two-point sources in five-dimensional Kaluza-Klein spacetimes which are characterized by mass, separation of...
Ando, Masaki, Kawamura, Seiji, Sato, Shuichi, Nakamura, Takashi, Tsubono, Kimio, Araya, Akito, ...
DECIGO pathfinder (DPF) is a milestone satellite mission for DECIGO (DECi-hertz Interferometer Gravitational wave Observatory), which is a future space gravitational wave antenna. DECIGO is expected...
Prediction of paclitaxel sensitivity by CDK1 and CDK2 activity in human breast cancer cells (2009)
Nakayama, Satoshi, Torikoshi, Yasuhiro, Takahashi, Takeshi, Yoshida, Tomokazu, Sudo, Tamotsu, Matsushima, Tomoko, ...
Abstract Introduction Paclitaxel is used widely in the treatment of breast cancer. Not all tumors respond to this drug, however, and the characteristics that distinguish resistant tumors from...
Perturbations of Spacetime around a Stationary Rotating Cosmic String (2008)
Ogawa, Kouji, Ishihara, Hideki, Kozaki, Hiroshi, Nakano, Hiroyuki
We consider the metric perturbations around a stationary rotating Nambu-Goto string in Minkowski spacetime. By solving the linearized Einstein equations, we study the effects of azimuthal...
Perturbations of spacetime around a stationary rotating cosmic string (2008)
Ogawa, Kouji, Ishihara, Hideki, Kozaki, Hiroshi, Nakano, Hiroyuki
Archived in arXiv:0811.2846 v1 Now 18, 2008
Spacetime analogue of Bose-Einstein condensates: Bogoliubov-de Gennes formulation (2008)
Kurita, Yasunari, Kobayashi, Michikazu, Morinari, Takao, Tsubota, Makoto, Ishihara, Hideki
We construct quantum field theory in an analogue curved spacetime in Bose-Einstein condensates based on the Bogoliubov-de Gennes equations, by exactly relating quantum particles in curved spacetime...
Ando, Masaki, Kawamura, Seiji, Nakamura, Takashi, Tsubono, Kimio, Tanaka, Takahiro, Funaki, Ikkoh, ...
DECIGO pathfinder (DPF) is a milestone satellite mission for DECIGO (DECi-hertz Interferometer Gravitational wave Observatory) which is a future space gravitational wave antenna. DECIGO is expected...
The Japanese space gravitational wave antenna; DECIGO (2008)
Kawamura, Seiji, Ando, Masaki, Nakamura, Takashi, Tsubono, Kimio, Tanaka, Takahiro, Funaki, Ikkoh, ...
DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is the future Japanese space gravitational wave antenna. DECIGO is expected to open a new window of observation for gravitational...
Stationary rotating strings as relativistic particle mechanics (2008)
Kouji, Ogawa, Ishihara, Hideki, Kozaki, Horishi, Nakano, Hiroyuki, Saito, Shinya
Also archived in arXiv:0803.4072 v2 Jun 23, 2008. Publisher's version can be found here:...
Rotating Kaluza-Klein Multi-Black Holes with Godel Parameter (2008)
Matsuno, Ken, Ishihara, Hideki, Nakagawa, Toshiharu, Tomizawa, Shinya
We obtain new five-dimensional supersymmetric rotating multi-Kaluza-Klein black hole solutions with the Godel parameter in the Einstein-Maxwell system with a Chern-Simons term. These solutions have...
Strings in five-dimensional anti-de Sitter space with a symmetry (2008)
Koike, Tatsuhiko, Kozaki, Hiroshi, Ishihara, Hideki
The equation of motion of an extended object in spacetime reduces to an ordinary differential equation in the presence of symmetry. By properly defining of the symmetry with notion of cohomogeneity,...
Stationary Rotating Strings as Relativistic Particle Mechanics (2008)
Ogawa, Kouji, Ishihara, Hideki, Kozaki, Hiroshi, Nakano, Hiroyuki, Saito, Shinya
Stationary rotating strings can be viewed as geodesic motions in appropriate metrics on a two-dimensional space. We obtain all solutions describing stationary rotating strings in flat spacetime as an...
Tomizawa, Shinya, Ishihara, Hideki, Matsuno, Ken, Nakagawa, Toshiharu
Applying squashing transformation to Kerr-Godel black hole solutions, we present a new type of a rotating Kaluza-Klein black hole solution to the five-dimensional Einstein-Maxwell theory with a...
Evolution of perturbations of squashed Kaluza-Klein black holes: escape from instability (2008)
Ishihara, Hideki, Kimura, Masashi, Konoplya, Roman A., Murata, Keiju, Soda, Jiro, Zhidenko, Alexander
The squashed Kaluza-Klien (KK) black holes differ from the Schwarzschild black holes with asymptotic flatness or the black strings even at energies for which the KK modes are not excited yet, so that...
Kurita, Yasunari, Ishihara, Hideki
We investigate thermodynamics constructed on different background reference spacetimes for squashed Kaluza-Klein (SqKK) black hole and electrically charged black string in five-dimensional...
Species Differences Between Human and Rat in the Substrate Specificity of Cathepsin K (2008)
Tada, Sachiyo, Tsutsumi, Kae, Ishihara, Hideki, Suzuki, Kenji, Gohda, Keigo, Teno, Naoki
Cathepsin K is known to play an important role in bone resorption, and it has the P2 specificity for proline. Rat cathepsin K has 88% identity with the human enzyme. However, it has been reported...
Yasuhiro Torikoshi, Takeshi Takahashi, Tomokazu Yoshida, Tamotsu Sudo, Tomoko Matsushima, Yuko Kawasaki, ...
PDF corresponds to the article as it appeared upon acceptance. Copyedited and fully formatted PDF and full text (HTML) versions will be made available soon. Prediction of paclitaxel sensitivity by...
Charged Rotating Kaluza-Klein Black Holes in Five Dimensions (2007)
Nakagawa, Toshiharu, Ishihara, Hideki, Matsuno, Ken, Tomizawa, Shinya
We construct a new charged rotating Kaluza-Klein black hole solution in the five-dimensional Einstein-Maxwell theory with a Chern-Simon term. The features of the solutions are also investigated. The...
On the Stability of Squashed Kaluza-Klein Black Holes (2007)
Kimura, Masashi, Murata, Keiju, Ishihara, Hideki, Soda, Jiro
The stability of squashed Kaluza-Klein black holes is studied. The squashed Kaluza-Klein black hole looks like five dimensional black hole in the vicinity of horizon and four dimensional Minkowski...
Magnification Probability Distribution Functions of Standard Candles in a Clumpy Universe (2007)
Yoo, Chul-Moon, Ishihara, Hideki, Nakao, Ken-ichi, Tagoshi, Hideyuki
Lensing effects on light rays from point light sources, such like Type Ia supernovae, are simulated in a clumpy universe model. In our universe model, it is assumed that all matter in the universe...
Horizons of Coalescing Black Holes on Eguchi-Hanson Space (2007)
Yoo, Chul-Moon, Ishihara, Hideki, Kimura, Masashi, Matsuno, Ken, Tomizawa, Shinya
Using the numerical method, we study dynamics of coalescing black holes on the Eguchi-Hanson base space. Effects of a difference in spacetime topology on the black hole dynamics is discussed. We...
Coalescence of Rotating Black Holes on Eguchi-Hanson Space (2007)
Matsuno, Ken, Ishihara, Hideki, Kimura, Masashi, Tomizawa, Shinya
We obtain new charged rotating multi-black hole solutions on the Eguchi-Hanson space in the five-dimensional Einstein-Maxwell system with a Chern-Simons term and a positive cosmological constant. In...
Supersymmetric Black Rings on Eguchi-Hanson Space (2007)
Tomizawa, Shinya, Ishihara, Hideki, Kimura, Masashi, Matsuno, Ken
We construct new supersymmetric black ring solutions on the Eguchi-Hanson base space as solutions of five-dimensional minimal supergravity. The solutions have the same two angular momentum components...
Mass and Free energy in Thermodynamics of Squashed Kaluza-Klein Black Holes (2007)
Kurita, Yasunari, Ishihara, Hideki
The Abbott-Deser mass, the Hamiltonian and the Komar mass of the 5-dimensional Kaluza-Klein black hole with squashed horizons take different values. Introducing a new couple of thermodynamic...
Hawking Radiation from Squashed Kaluza-Klein Black Holes -- A Window to Extra Dimensions -- (2007)
We explore the obsevability of extra dimensions through 5-dimensional squashed Kaluza-Klein black holes residing in the Kaluza-Klein spacetime. With the expectation that the Hawking radiation...
Cosmological Black Holes on Taub-NUT space in Five-Dimensional Einstein-Maxwell Theory (2007)
Ida, Daisuke, Ishihara, Hideki, Kimura, Masashi, Matsuno, Ken, Morisawa, Yoshiyuki, Tomizawa, Shinya
The cosmological black hole solution on the Gibbons-Hawking space has been constructed. We also investigate the properties of this solution in the case of a single black hole. Unlike the...
Topology Change of Coalescing Black Holes on Eguchi-Hanson Space (2006)
Ishihara, Hideki, Kimura, Masashi, Tomizawa, Shinya
We construct multi-black hole solutions in the five-dimensional Einstein-Maxwell theory with a positive cosmological constant on the Eguchi-Hanson space, which is an asymptotically locally Euclidean...
Black Holes on Eguchi-Hanson Space in Five-Dimensional Einstein-Maxwell Theory (2006)
Ishihara, Hideki, Kimura, Masashi, Matsuno, Ken, Tomizawa, Shinya
We construct a pair of black holes on the Eguchi-Hanson space as a solution in the five-dimensional Einstein-Maxwell theory.
Kaluza-Klein Multi-Black Holes in Five-Dimensional Einstein-Maxwell Theory (2006)
Ishihara, Hideki, Kimura, Masashi, Matsuno, Ken, Tomizawa, Shinya
We construct the Kaluza-Klein multi-black hole solutions on the Gibbons-Hawking multi-instanton space in the five-dimensional Einstein-Maxwell theory. We study geometric properties of the multi-black...
The universe out of a monopole in the laboratory? (2006)
Sakai, Nobuyuki, Nakao, Ken-ichi, Ishihara, Hideki, Kobayashi, Makoto
To explore the possibility that an inflationary universe can be created out of a stable particle in the laboratory, we consider the classical and quantum dynamics of a magnetic monopole in the...
Kaluza-Klein Black Holes with Squashed Horizons (2005)
Ishihara, Hideki, Matsuno, Ken
We study geometrical structures of charged static black holes in the five-dimensional Einstein-Maxwell theory. The black holes we study have horizons in the form of squashed $ {\rm S}^3$, and their...
Classification of Cohomogeneity One Strings (2005)
Ishihara, Hideki, Kozaki, Hiroshi
We define the cohomogeneity one string, string with continuous symmetries, as its world surface is tangent to a Killing vector field of a target space. We classify the Killing vector fields by an...
Compact Einstein Spaces based on Quaternionic K\"ahler Manifolds (2003)
Hiragane, Mitsuo, Yasui, Yukinori, Ishihara, Hideki
We investigate the Einstein equation with a positive cosmological constant for $4n+4$-dimensional metrics on bundles over Quaternionic K\"ahler base manifolds whose fibers are 4-dimensional Bianchi...
How Does Naked Singularity Look? (2002)
Nakao, Ken-ichi, Kobayashi, Naoki, Ishihara, Hideki
There are non-radial null geodesics emanating from the shell focusing singularity formed at the symmetric center in a spherically symmetric dust collapse. In this article, assuming the...
Big bang of the brane universe (2001)
Big bang of the Friedmann-Robertson-Walker (FRW)-brane universe is studied. In contrast to the spacelike initial singularity of the usual FRW universe, the initial singularity of the FRW-brane...
Nakamura, Kouji, Ishihara, Hideki
The perturbative modes propagating along an infinite string are investigated within the framework of the gauge invariant perturbation formalism on a spacetime containing a self-gravitating straight...
Causality of the brane universe (2000)
Causal structure of the brane universe with respect to null geodesics in the bulk spacetime is studied. It is pointed out that apparent causality violation is possible for the brane universe which...
Nakamura, Kouji, Ishibashi, Akihiro, Ishihara, Hideki
We study the perturbative dynamics of an infinite gravitating Nambu-Goto string within the general-relativistic perturbation framework. We develop the gauge invariant metric perturbation on a...
How Do Nonlinear Voids Affect Light Propagation ? (1999)
Sugiura, Norimasa, Nakao, Ken-ichi, Ida, Daisuke, Sakai, Nobuyuki, Ishihara, Hideki
Propagation of light in a clumpy universe is examined. As an inhomogeneous matter distribution, we take a spherical void surrounded by a dust shell where the ``lost mass'' in the void is compensated...
Equation of motion for a domain wall coupled to gravitational field (1998)
Ishibashi, Akihiro, Ishihara, Hideki
The equation of motion for a domain wall coupled to gravitational field is derived from the Nambu-Goto action. The domain wall is treated as a source of gravitational field. The perturbed equation is...
On the perturbation of domain wall coupled to gravitational waves (1997)
Ishibashi, Akihiro, Ishihara, Hideki
The equation of motion for domain wall coupled to gravitational field is derived. The domain wall is treated as a source of gravitational field around the wall. The perturbed equation is also...
Bubble wall perturbations coupled with gravitational waves (1997)
Ishibashi, Akihiro, Ishihara, Hideki
We study a coupled system of gravitational waves and a domain wall which is the boundary of a vacuum bubble in de Sitter spacetime. To treat the system, we use the metric junction formalism of...
Onset of inflation in inhomogeneous cosmology (1996)
Iguchi, Osamu, Ishihara, Hideki
We study how the initial inhomogeneities of the universe affect the onset of inflation in the closed universe. We consider the model of a chaotic inflation which is driven by a massive scalar field....
Perturbing Supersymmetric Black Hole (1996)
Onozawa, Hisashi, Okamura, Takashi, Mishima, Takashi, Ishihara, Hideki
An investigation of the perturbations of the Reissner-Nordstr\"{o}m black hole in the $N=2$ supergravity is presented. We prove in the extremal limit that the black hole responds to the perturbation...
Quasinormal modes of maximally charged black holes (1996)
Onozawa, Hisashi, Mishima, Takashi, Okamura, Takashi, Ishihara, Hideki
A new algorithm for computing the accurate values of quasinormal frequencies of extremal Reissner-Nordstr\"{o}m black holes is presented. The numerically computed values are consistent with the...
Hamilton-Jacobi Equation for Brans-Dicke Theory and Its Long-wavelength Solution (1995)
Soda, Jiro, Ishihara, Hideki, Iguchi, Osamu
Hamilton-Jacobi equation for Brans-Dicke theory is solved by using a long-wavelength approximation. We examine the non-linear evolution of the inhomogeneities in the dust fluid case and the...
Does a domain wall emit gravitational waves? -- General-relativistic perturbative treatment (1994)
Kodama, Hideo, Ishihara, Hideki, Fujiwara, Yoshihisa
The behavior of gravitational wave perturbations on a locally Minkowskian spacetime background containing a planar domain wall is investigated in the gauge-invariant general relativistic framework....
Common Epitopes in Human Isoferritins Characterized by Murine Monoclonal Antibodies (1986)
ONO, Kenichi, JITSUKAWA, Tomofumi, ISHIHARA, Hideki, FUKUDA, Akio
Three monoclonal antibodies against human liver ferritin were selected to study antigenic determinants (epitopes) of human isoferritins. These monoclonal antibodies were found to form...