Zobrazeno 1 - 10
of 359
pro vyhledávání: '"CHIBA, Takeshi"'
Autor:
Chiba, Takeshi, Houri, Tsuyoshi
The Eisenhart lift of Riemannian type describes the motion of a particle as a geodesic in a higher-dimensional Riemannian manifold with one additional coordinate. It has recently been generalized to a scalar field system by introducing one additional
Externí odkaz:
http://arxiv.org/abs/2409.16325
Autor:
Chiba, Takeshi, Houri, Tsuyoshi
A scalar field with an exponential potential has been proposed as a model of inflation (called power-law inflation). Although it admits an exact solution, the integrability of the system has not been shown.We uncover the hidden symmetries behind the
Externí odkaz:
http://arxiv.org/abs/2404.19162
Autor:
Chiba, Takeshi, Kinoshita, Shunichiro
We derive the time dilation formula for charged quantum clocks in electromagnetic fields. As a concrete example of non-inertial motion, we consider a cyclotron motion in a uniform magnetic field. Applying the time dilation formula to coherent state o
Externí odkaz:
http://arxiv.org/abs/2304.04375
Autor:
Chiba, Takeshi, Kinoshita, Shunichiro
A proper time observable for a quantum clock is introduced and it is found that the proper time read by one clock conditioned on another clock reading a different proper time obeys classical time dilation in accordance with special relativistic kinem
Externí odkaz:
http://arxiv.org/abs/2209.07638
Autor:
Akutsu, Tomotada, Kawamura, Seiji, Nishizawa, Atsushi, Arai, Koji, Yamamoto, Kazuhiro, Tatsumi, Daisuke, Nagano, Shigeo, Nishida, Erina, Chiba, Takeshi, Takahashi, Ryuichi, Sugiyama, Naoshi, Fukushima, Mitsuhiro, Yamazaki, Toshitaka, Fujimoto, Masa-Katsu
Externí odkaz:
http://hdl.handle.net/2237/11309
Publikováno v:
In Biochemistry and Biophysics Reports September 2024 39
Autor:
Chiba, Takeshi
Motivated by constant-G theory, we introduce a one-parameter family of scalar-tensor theories as an extension of constant-G theory in which the conformal symmetry is a cosmological attractor. Since the model has the coupling function of negative curv
Externí odkaz:
http://arxiv.org/abs/2104.11362
Autor:
Kawamura, Seiji, Ando, Masaki, Seto, Naoki, Sato, Shuichi, Musha, Mitsuru, Kawano, Isao, Yokoyama, Jun'ichi, Tanaka, Takahiro, Ioka, Kunihito, Akutsu, Tomotada, Takashima, Takeshi, Agatsuma, Kazuhiro, Araya, Akito, Aritomi, Naoki, Asada, Hideki, Chiba, Takeshi, Eguchi, Satoshi, Enoki, Motohiro, Fujimoto, Masa-Katsu, Fujita, Ryuichi, Futamase, Toshifumi, Harada, Tomohiro, Hayama, Kazuhiro, Himemoto, Yoshiaki, Hiramatsu, Takashi, Hong, Feng-Lei, Hosokawa, Mizuhiko, Ichiki, Kiyotomo, Ikari, Satoshi, Ishihara, Hideki, Ishikawa, Tomohiro, Itoh, Yousuke, Ito, Takahiro, Iwaguchi, Shoki, Izumi, Kiwamu, Kanda, Nobuyuki, Kanemura, Shinya, Kawazoe, Fumiko, Kobayashi, Shiho, Kohri, Kazunori, Kojima, Yasufumi, Kokeyama, Keiko, Kotake, Kei, Kuroyanagi, Sachiko, Maeda, Kei-ichi, Matsushita, Shuhei, Michimura, Yuta, Morimoto, Taigen, Mukohyama, Shinji, Nagano, Koji, Nagano, Shigeo, Naito, Takeo, Nakamura, Kouji, Nakamura, Takashi, Nakano, Hiroyuki, Nakao, Kenichi, Nakasuka, Shinichi, Nakayama, Yoshinori, Nakazawa, Kazuhiro, Nishizawa, Atsushi, Ohkawa, Masashi, Oohara, Kenichi, Sago, Norichika, Saijo, Motoyuki, Sakagami, Masaaki, Sakai, Shin-ichiro, Sato, Takashi, Shibata, Masaru, Shinkai, Hisaaki, Shoda, Ayaka, Somiya, Kentaro, Sotani, Hajime, Takahashi, Ryutaro, Takahashi, Hirotaka, Akiteru, Takamori, Taniguchi, Keisuke, Taruya, Atsushi, Tsubono, Kimio, Tsujikawa, Shinji, Ueda, Akitoshi, Ueda, Ken-ichi, Watanabe, Izumi, Yagi, Kent, Yamada, Rika, Yokoyama, Shuichiro, Yoo, Chul-Moon, Zhu, Zong-Hong
Deci-hertz Interferometer Gravitational Wave Observatory (DECIGO) is the future Japanese space mission with a frequency band of 0.1 Hz to 10 Hz. DECIGO aims at the detection of primordial gravitational waves, which could be produced during the inflat
Externí odkaz:
http://arxiv.org/abs/2006.13545
We study the frame dependence/independence of cosmological observables under disformal transformations, extending the previous results regarding conformal transformations, and provide the correspondence between Jordan-frame and Einstein-frame variabl
Externí odkaz:
http://arxiv.org/abs/2003.10633