Zobrazeno 1 - 10
of 77
pro vyhledávání: '"ISHIKAWA, Ryotaro"'
Autor:
Ishikawa, Ryotaro, Hachisu, Taku
One of the key challenges in the field of haptic research is designing plausible stimuli using haptic interfaces with limited degrees of freedom. Although the plausible approach, which simplifies and/or exaggerates stimuli to enhance information tran
Externí odkaz:
http://arxiv.org/abs/2411.05163
Autor:
Ishikawa, Ryotaro, Ketov, Sergei V.
Publikováno v:
Classical and Quantum Gravity 41 (2024) 195014
A viable model of large-field (chaotic) inflation with efficient production of primordial black holes is proposed in Starobinsky-like (modified) supergravity leading to the "no-scale-type" K\"ahler potential and the Wess-Zumino-type ("renormalizable"
Externí odkaz:
http://arxiv.org/abs/2401.11651
We extend the Cecotti-Kallosh model of Starobinsky inflation in supergravity by adding a holomorphic function to the superpotential in order to generate a large peak in the power spectrum of scalar (curvature) perturbations. In our approach, the sing
Externí odkaz:
http://arxiv.org/abs/2210.10348
Autor:
Ishikawa, Ryotaro, Ketov, Sergei V.
Publikováno v:
Class. Quantum Grav. 39 (2022) 015016
We study the parameter space of the effective (with two scalars) models of cosmological inflation and primordial black hole (PBH) formation in the modified $(R+R^2)$ supergravity. Our models describe double inflation, whose first stage is driven by S
Externí odkaz:
http://arxiv.org/abs/2108.04408
Autor:
Ishikawa, Ryotaro, Ketov, Sergei V.
Publikováno v:
Prog Theor Exp Phys (2020)
The $N=1$ supersymmetric Born-Infeld theory coupled to $N=1$ supergravity in four spacetime dimensions is studied in the presence of a cosmological term with spontaneous supersymmetry breaking. The consistency is achieved by compensating a negative c
Externí odkaz:
http://arxiv.org/abs/1904.08586
Publikováno v:
Phys. Rev. D 98, 083511 (2018)
A supergravity extension of the $(R+R^2)$ gravity with the additional (Born-Infeld) structure of a massive vector multiplet gives rise to the specific $F(R)$ gravity, whose structure is investigated in detail. The massive vector multiplet has inflato
Externí odkaz:
http://arxiv.org/abs/1807.08394
Autor:
Ishikawa, Ryotaro, Ishigaki, Takuma, Shimada, Takeshi, Tanoue, Hiroki, Yoshinaga, Naoki, Oribe, Naoya, Morimoto, Takafumi, Matsumoto, Takeshi, Hosono, Masahito
Publikováno v:
In Schizophrenia Research January 2020 215:399-407
Autor:
Hosono, Masahito, Ishigaki, Takuma, Ikeda, Naoya, Ishikawa, Ryotaro, Nishiguchi, Yuki, Mizukami, Katsuyoshi
Publikováno v:
Psychiatry & Clinical Neurosciences Reports; Jun2024, Vol. 3 Issue 2, p1-14, 14p
Akademický článek
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