Zobrazeno 1 - 10
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pro vyhledávání: '"Nagasaki, Koichi"'
Autor:
Nagasaki, Koichi, Sato, Matsuo
String geometry theory is one of the candidates of the non-perturbative formulation of string theory. In this paper, in the bosonic sector of string geometry theory, we identify perturbative vacua in bosonic string theory, which include general strin
Externí odkaz:
http://arxiv.org/abs/2309.10394
Autor:
Nagasaki, Koichi
In this work we consider a spacial kind of spacetime called AdS accelerating black holes. This is a kind of black holes which contain a stringlike singularity along polar axises attached to the black hole and it accelerates the black hole. In these k
Externí odkaz:
http://arxiv.org/abs/2205.00196
Autor:
Nagasaki, Koichi
In this work we consider a spacial kind of spacetime called AdS accelerating black holes. This is a kind of black holes which contain a stringlike singularity along polar axises attached to the black hole and it accelerates the black hole. By using a
Externí odkaz:
http://arxiv.org/abs/2108.05429
Autor:
Nagasaki, Koichi
We find the probe D5-brane solution on the black home spacetime which is asymptomatically AdS_5 x S^5. These black holes have spherical, hyperbolic and toroidal structures. Depending on the gauge flux on the D5-brane, the D5-brane behaves differently
Externí odkaz:
http://arxiv.org/abs/2105.05814
Autor:
Nagasaki, Koichi
Publikováno v:
Prog Theor Exp Phys (2021)
Our interest is to find the difference of the behavior between black holes with three different topologies. These black holes have spherical, hyperbolic and toroidal structures. We study in this paper the behavior of a probe D5-branes in this nontriv
Externí odkaz:
http://arxiv.org/abs/2009.11143
Autor:
Nagasaki, Koichi
We consider the growth of the action for black hole spacetime with a fundamental string. Our interest is to find the difference of the behavior between black holes with three different topologies in the scenario of complexity-action conjecture. These
Externí odkaz:
http://arxiv.org/abs/1912.03567
Autor:
Nagasaki, Koichi
We consider a D5-brane solution in AdS black hole spacetime. This is a defect solution moving in subspace of AdS5 x S5. This non-local object is realized by the probe D5-brane moving in black hole spacetime. We found this probe brane does not penetra
Externí odkaz:
http://arxiv.org/abs/1911.12533
Autor:
Nagasaki, Koichi
Publikováno v:
Phys. Rev. D 100, 066032 (2019)
A defect solution in the AdS5 x S5 black hole spacetime is given. This is a generalization of the previous work to another spacetime. The equation of motion for a sort of non-local operator, "an interface," is given and its numerical solution is show
Externí odkaz:
http://arxiv.org/abs/1904.08509
Autor:
Nagasaki, Koichi
Publikováno v:
Prog Theor Exp Phys (2020)
We consider a defect solution in the AdS5 x S5 spacetime. This is the generalization of the previous work [arXiv:1109.1927] to the other spacetime. This also gives the generalization of Complexity and Action relation [arXiv:1705.08424] including the
Externí odkaz:
http://arxiv.org/abs/1812.07162
Autor:
Nagasaki, Koichi
Publikováno v:
Phys. Rev. D 98, 126014 (2018)
We study the effect of a probe string to black hole complexity according to the CA (Complexity equals Action) conjecture. Our system contains a particle moving on the boundary of black hole spacetime. In the dual description this corresponds to the i
Externí odkaz:
http://arxiv.org/abs/1807.01088