Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Gen Uchida"'
Publikováno v:
Prog.Theor.Phys.Suppl.148:267-275,2003
Recently, we proposed a new braneworld model [GIT] in which the collision of a brane universe and a vacuum bubble coming from the extra-dimension is utilized as a trigger of brane big-bang. In this article, mainly reviewing this model, we briefly sum
Externí odkaz:
http://arxiv.org/abs/hep-th/0207140
Publikováno v:
Phys.Rev. D66 (2002) 023519
We propose an alternative inflationary universe scenario in the context of Randall-Sundrum braneworld cosmology. In this new scenario the existence of extra-dimension(s) plays an essential role. First, the brane universe is initially in the inflation
Externí odkaz:
http://arxiv.org/abs/hep-th/0110286
Publikováno v:
International Journal of Automation Technology. 17:21-31
Different grinding wheel surface conditions affect the ground surface roughness and grinding resistance during the grinding process. In addition, as the grinding wheel surface condition changes depending on the dressing conditions, the difference in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f28c3cb53a173c8dee32ed906a72e06
https://doi.org/10.20965/ijat.2023.p0021
https://doi.org/10.20965/ijat.2023.p0021
Autor:
Gen, Uchida, Sasaki, Misao
Publikováno v:
Prog.Theor.Phys.105:591-606,2001
The radion on the de Sitter brane is investigated at the linear perturbation level, using the covariant curvature tensor formalism developed by Shiromizu, Maeda and Sasaki. It is found that if there is only one de Sitter brane with positive tension,
Externí odkaz:
http://arxiv.org/abs/gr-qc/0011078
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 86, Iss 892, Pp 20-00284-20-00284 (2020)
In the grinding process, the difference of the grinding wheel surface condition affects a grinding performance and a ground surface roughness. It is well known that the grinding wheel surface topography is changed by the difference of dressing condit
Externí odkaz:
https://doaj.org/article/8d1628538bf04e87aa92d86f4c03e828
Autor:
Gen, Uchida, Sasaki, Misao
Publikováno v:
Phys.Rev.D61:103508,2000
We consider a wave-function approach to the false vacuum decay with gravity and present a new method to calculate the tunneling amplitude under the WKB approximation. The result agrees with the one obtained by the Euclidean path-integral method, but
Externí odkaz:
http://arxiv.org/abs/gr-qc/9912096
Autor:
Shiromizu, Tetsuya, Gen, Uchida
Publikováno v:
Class.Quant.Grav.17:1361-1368,2000
We consider the force acting on a spinning charged test particle (probe particle) with the mass m and the charge q in slow rotating the Kerr-Newman-deSitter(KNdS) black hole with the mass M and the charge Q. We consider the case which the spin vector
Externí odkaz:
http://arxiv.org/abs/gr-qc/9912040
Autor:
Shiromizu, Tetsuya, Gen, Uchida
Publikováno v:
Class.Quant.Grav. 16 (1999) 2955-2964
We define space-times which are asymptotic to radiation dominant Friedman-Robertson-Walker space-times at timelike infinity and study the asymptotic structure. We discuss the local asymptotic symmetry and give a definition of the total energy from th
Externí odkaz:
http://arxiv.org/abs/gr-qc/9905092
Autor:
Gen, Uchida, Shiromizu, Tetsuya
Publikováno v:
J.Math.Phys. 40 (1999) 2021-2031
It is shown that if an asymptotically flat spacetime is asymptotically stationary, in the sense that $\Lie_{\xi} g_{ab}$ vanishes at the rate $\sim t^{-3}$ for asymptotically timelike vector field $\xi^a$, and the energy-momentum tensor vanishes at t
Externí odkaz:
http://arxiv.org/abs/gr-qc/9810040
Autor:
Gen, Uchida, Shiromizu, Tetsuya
Publikováno v:
J.Math.Phys.39:6573-6592,1998
By extending Ashtekar and Romano's definition of spacelike infinity to the timelike direction, a new definition of asymptotic flatness at timelike infinity for an isolated system with a source is proposed. The treatment provides unit spacelike 3-hype
Externí odkaz:
http://arxiv.org/abs/gr-qc/9709009