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pro vyhledávání: '"Miyashita, Shoichiro"'
Autor:
Miyashita, Shoichiro
Publikováno v:
JHEP 06 (2024) 134
Recently, I studied the thermodynamical properties of the Einstein-Maxwell system with a box boundary in 4-dimensions [1](JHEP 04 (2024) 083). In this paper, I investigate those in 3-dimensions using the zero-loop saddle-point approximation and focus
Externí odkaz:
http://arxiv.org/abs/2403.01436
Autor:
Miyashita, Shoichiro
Publikováno v:
JHEP 04 (2024) 083
At first glance, thermodynamic properties of gravity with asymptotically AdS conditions and those with box boundary conditions, where the spatial section of the boundary is a sphere of finite radius, appear similar. Both exhibit a similar phase struc
Externí odkaz:
http://arxiv.org/abs/2402.16113
Publikováno v:
Prog Theor Exp Phys (2022)
We consider gauge/gravity correspondence between maximally supersymmetric Yang-Mills theory in ($p+1$) dimensions and superstring theory on the near-horizon limit of the D$p$-brane solution. The string-frame metric is AdS$_{p+1}\times S^{8-p}$ times
Externí odkaz:
http://arxiv.org/abs/2109.12091
Autor:
Miyashita, Shoichiro
Publikováno v:
JHEP 09 (2021) 121
Gravitational thermodynamics and gravitoscalar thermodynamics with $S^2 \times \mathbb{R}$ boundary geometry are investigated through the partition function, assuming that all Euclidean saddle point geometries contribute to the path integral and domi
Externí odkaz:
http://arxiv.org/abs/2106.12273
Autor:
Miyashita, Shoichiro
In 1999, R. B. Mann proposed a counterterm that is some sort of generalization of the well-known Holographic counterterm and that can eliminate the divergence of the gravitational action of asymptotically AdS and flat spacetimes (Phys. Rev. D $\bolds
Externí odkaz:
http://arxiv.org/abs/2007.13294
Autor:
Miyashita, Shoichiro
Publikováno v:
Class. Quant. Grav. 36 (2019) 155003
In this paper, I revisit the microcanonical partition function, or density of states (DOS), of general relativity. By using the minisuperspace path integral approximation, I directly calculate the $S^2 \times Disc$ topology sector of the DOS of a (qu
Externí odkaz:
http://arxiv.org/abs/1906.11838
Publikováno v:
Phys. Rev. D 99, 064004 (2019)
We find stable singularity-free cosmological solutions in non-flat Friedmann-Lema\^{i}tre-Robertson-Walker (FLRW) spacetime in the context of Ho\v{r}ava-Lifshitz (HL) theory. Although we encounter the negative squared effective masses of the scalar p
Externí odkaz:
http://arxiv.org/abs/1812.10295
Publikováno v:
Phys. Rev. D 95, 044044 (2017)
We study stability of singularity-free cosmological solutions with positive cosmological constant based on projectable Ho\v{r}ava-Lifshitz (HL) theory. In HL theory, the isotropic and homogeneous cosmological solutions with bounce can be realized if
Externí odkaz:
http://arxiv.org/abs/1612.09077
Autor:
Miyashita, Shoichiro, Maeda, Kei-ichi
Publikováno v:
Phys. Rev. D 94, 124037 (2016)
We study the Einstein-SO(3)Yang-Mills-Higgs system with a negative cosmological constant, and find the monopole black hole solutions as well as the trivial Reissner-Nordstr\"{o}m black hole. We discuss thermodynamical stability of the monopole black
Externí odkaz:
http://arxiv.org/abs/1610.07350
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