CHIBA Takeshi
| College of Humanities and Sciences Department of Physics | Professor |
Researcher Information
Research Keyword
Field Of Study
Career
- Apr. 2009 - Present
Nihon University, College of Humanities and Sciences Department of Physics, Professor - Apr. 2007 - Mar. 2009
Nihon University, College of Humanities and Sciences Department of Physics, Associate Professor - Apr. 2004 - Mar. 2007
Nihon University, College of Humanities and Sciences Department of Physics, Associate Professor - Apr. 2000 - Mar. 2004
Kyoto University, Graduate School of Science, Research Assistant - Apr. 1998 - Mar. 2000
The University of Tokyo, Graduate School of Science, 日本学術振興会特別研究員 - Apr. 1996 - Mar. 1998
Kyoto University, Yukawa Institute for Theoretical Physics, 中核的研究機関研究員
Educational Background
Member History
- Jun. 2021 - Nov. 2021
- Jun. 2020 - Nov. 2020
- Aug. 2017 - Jul. 2018
- Dec. 2015 - Nov. 2016
運営委員会副委員長, 理論天文学宇宙物理学懇談会 - Dec. 2014 - Nov. 2016
運営委員, 理論天文学宇宙物理学懇談会 - Dec. 2014 - Nov. 2015
運営委員会委員長, 理論天文学宇宙物理学懇談会 - Aug. 2013 - Jul. 2014
日本学術振興会 特別研究員等審査会専門委員及び国際事業委員会書面審査委員, 日本学術振興会 - Aug. 2010 - Jul. 2011
日本学術振興会 特別研究員等審査会専門委員及び国際事業委員会書面審査委員, 日本学術振興会 - Dec. 2008 - Dec. 2010
運営委員, 理論天文学宇宙物理学懇談会 - Oct. 2008 - Sep. 2010
日本物理学会宇宙線･宇宙物理(理論)領域運営委員, 日本物理学会 - May 2009 - Apr. 2010
日本物理学会宇宙線･宇宙物理(理論)領域世話人, 日本物理学会
Research activity information
Paper
- ★Hidden symmetries of power-law inflation
Takeshi Chiba; Tsuyoshi Houri
Classical and Quantum Gravity, Oct. 2024, Refereed
Lead - ★Conformal-Frame (In)depedence of Cosmological Observations in Scalar-Tensor Theory
Takeshi Chiba; Masahide Yamaguchi
Journal of Cosmology and Astroparticle Physics, Oct. 2013, Refereed, Not invited
Lead - ★Shadows of multi-black holes: Analytic exploration
Akifumi Yumoto; Daisuke Nitta; Takeshi Chiba; Naoshi Sugiyama
Physical Review D, Nov. 2012, Refereed, Not invited
Corresponding - ★Slow-roll Thawing Quintessence
Takeshi Chiba
Physical Review D, 2009, Refereed, Not invited
Lead - ★Precision Calculations of the Gravitational Wave Background Spectrum from Inflation
Sachiko Kuroyanagi; Takeshi Chiba; Naoshi Sugiyama
Physical Review D, 2009, Refereed, Not invited - ★Solar System Constraints to General f(R) Gravity
Takeshi Chiba; Tristan L. Smith; Adrienne L. Erickcek
Physical Review D, 2007, Refereed, Not invited
Lead - ★WMAP Constraints on Scalar-Tensor Cosmology and the Variation of the Gravitational Constant
Ryo Nagata; Takeshi Chiba; Naoshi Sugiyama
Physical Review D, 2004, Refereed, Not invited
Corresponding - ★1/R Gravity and Scalar-Tensor Gravity
Takeshi Chiba
Physics Letters B, 2003, Not refereed, Not invited
Lead - ★Kinetically Driven Quintessence
Takeshi Chiba; Takahiro Okabe; Masahide Yamaguchi
Physical Review D, 2000, Refereed, Not invited
Lead - ★Determining the Equation of State of the Expanding Universe: Inverse Problem in Cosmology
Takashi Nakamura and Takeshi Chiba
Monthly Notices of the Royal Astronomical Society, 1999, Refereed, Not invited
Lead - ★Quintessence, the Gravitational Constant, and Gravity
Takeshi Chiba
Physical Review D, 1999, Refereed, Not invited
Lead - ★The luminosity distance, the equation of state, and the geometry of the universe
T Chiba; T Nakamura
PROGRESS OF THEORETICAL PHYSICS, Nov. 1998, Refereed, Not invited - ★Black hole binary formation in the expanding universe: Three body problem approximation
Ioka, K.; Chiba, T.; Tanaka, T.; Nakamura, T.
Physical Review D, 1998, Refereed, Not invited - ★Cosmology with x-matter
Takeshi Chiba; Naoshi Sugiyama; Takashi Nakamura
Monthly Notices of the Royal Astronomical Society, 1997, Refereed, Not invited
Lead - Integrability of conformal Killing vectors in the Eisenhart lift of scalar-field FLRW cosmology
Takeshi Chiba; Tsuyoshi Houri
Classical and Quantum Gravity, Aug. 2026 - Singularity avoidance in black hole interiors by quantum gravity effects
Takeshi Chiba; Hiroki Matsui; Keiju Murata
Physical Review D, Jan. 2026 - Eisenhart lift for scalar fields in the FLRW universe
Takeshi Chiba; Tsuyoshi Houri
Classical and Quantum Gravity, Mar. 2025 - Note on the time dilation of charged quantum clocks
Takeshi Chiba; Shunichiro Kinoshita
Physical Review D, Aug. 2023, Refereed
Lead - Quantum clocks, Gravitational Time Dilation, and Quantum Interference
Takeshi Chiba; Shunichiro Kinoshita
Physical Review D, Dec. 2022, Refereed
Lead - Spontaneous Scalarization in Scalar-Tensor Theories with Conformal Symmetry as an Attractor
Takeshi Chiba
Progress of Theoretical and Experimental Physics, Jan. 2022, Refereed, Not invited
Lead - Current status of space gravitational wave antenna DECIGO and B-DECIGO
S. Kawamura et al.
Progress of Theoretical and Experimental Physics, May 2021, Refereed, Not invited - Disformal Invariance of Cosmological Observables
Takeshi Chiba; Fabio Chibana; Masahide Yamaguchi
Journal of Cosmology and Astroparticle Physics, Jun. 2020, Refereed, Not invited
Lead - The effect of our local motion on the Sandage-Loeb test of the cosmic expansion
Takuya Inoue; Eiichiro Komatsu; Wako Aoki; Takeshi Chiba; Toru Misawa; Tomonori Usuda
Publications of the Astronomical Society of Japan, Dec. 2019, Refereed, Not invited - Space Gravitational Wave Antennas DECIGO and B-DECIGO
Seiji Kawamura et al.
International Journal of Modern Physics D, Oct. 2019, Refereed, Invited - Reconstructing $f(R)$ Gravity from the Spectral Index
Takeshi Chiba
Progress of Theoretical and Experimental Physics, Nov. 2018, Refereed, Not invited
Lead - Probing the Universe through the Stochastic Gravitational Wave Background
Sachiko Kuroyanagi; Takeshi Chiba; Tomo Takahashi
Journal of Cosmology and Astroparticle Physics, Nov. 2018, Refereed, Not invited - Reconstructing the inflaton potential from the spectral index
Takeshi Chiba
Proceedings of the 14th Marcel Grossmann Meeting on General Relativity, Dec. 2017, Refereed, Not invited
Lead - Spin Distribution of Primordial Black Holes
Takeshi Chiba; Shuichiro Yokoyama
Progress of Theoretical and Experimental Physics, Aug. 2017, Refereed, Not invited
Lead - The status of DECIGO
Shuichi Sato et al.
Journal of Physics: Conference Series, Jun. 2017, Refereed, Not invited - Cosmological Constraints on Scalar-Tensor Gravity and the Variation of the Gravitational Constant
Junpei Ooba; Kiyotomo Ichiki; Takeshi Chiba; Naoshi Sugiyama
Progress of Theoretical and Experimental Physics, Apr. 2017, Refereed, Not invited - A Note on Geodesics in the Hayward Metric
Takeshi Chiba; Masashi Kimura
Progress of Theoretical and Experimental Physics, Apr. 2017, Refereed, Not invited
Lead - Planck constraints on scalar-tensor cosmology and the variation of the gravitational constant
Junpei Ooba; Kiyotomo Ichiki; Takeshi Chiba; Naoshi Sugiyama
Physical Review D, Jun. 2016, Refereed, Not invited - Reconstructing the inflaton potential from the spectral index
Takeshi Chiba
Progress of Theoretical and Experimental Physics, Jul. 2015, Refereed, Not invited
Lead - Baryogenesis in a Flat Direction with Neither Baryon nor Lepton Charge (vol 92, 011301, 2004)
Takeshi Chiba; Fuminobu Takahashi; Masahide Yamaguchi
PHYSICAL REVIEW LETTERS, May 2015, Not refereed, Not invited - Consistency Relations for Large Field Inflation: Nonminimal coupling
Takeshi Chiba; Kazunori Kohri
Progress of Theoretical and Experimental Physics, Feb. 2015, Refereed, Not invited
Lead - Motion of Charged Particles around a Weakly Magnetized Rotating Black Hole
Ryo Shiose; Masashi Kimura; Takeshi Chiba
Physical Review D, Dec. 2014, Refereed, Not invited - Implication of the B-mode Polarization Measurement for Direct Detection of Inflationary Gravitationary Waves
Sachiko Kuroyanagi; Shinji Tsujikawa; Takeshi Chiba; Naoshi Sugiyama
Physical Review D, Sep. 2014, Refereed, Not invited - Consistency Relations for Large Field Inflation
Takeshi Chiba; Kazunori Kohri
Progress of Theoretical and Experimental Physics, Sep. 2014, Refereed, Not invited
Lead - Cosmological Scaling Solutions for Multiple Scalar Fields
Takeshi Chiba; Antonio De Felice; Shinji Tsujikawa
Physical Review D, Jul. 2014, Refereed, Not invited
Lead - 21aSB-4 スペース重力波アンテナDECIGO計画(55) : DECIGO/DPFの概要(21aSB 重力波(KAGRA,DECIGO,TOBA,検出器),宇宙線・宇宙物理領域)
安東 正樹; 神田 展行; 辻川 信二; 常定 芳基; 豊嶋 守生; 鳥居 泰男; 中尾 憲一; 中澤 知洋; 中須賀 真一; 中野 寛之; 長野 重夫; 中村 康二; 井岡 邦仁; 中山 宜典; 西澤 篤志; 西田 恵里奈; 西山 和孝; 丹羽 佳人; 能見 大河; 橋本 樹明; 端山 和大; 原田 知広; 疋田 渉; 高島 健; 姫本 宣朗; 平林 久; 平松 尚志; 福嶋 美津広; 藤田 龍一; 藤本 眞克; 二間瀬 敏史; 細川 瑞彦; 堀澤 秀之; 前田 恵一; 横山 順一; 松原 英雄; 松本 伸之; 道村 唯太; 宮川 治; 宮本 雲平; 三代木 伸二; 向山 信治; 森澤 理之; 森本 睦子; 森脇 成典; 阿久津 智忠; 八木 絢外; 山川 宏; 山崎 利孝; 山元 一広; 吉田 至順; 吉野 泰造; 柳 哲文; 若林 野花; 武者 満; 上田 暁俊; 麻生 洋一; 新谷 昌人; 坂井 真一郎; 川村 静児; 青柳 巧介; 我妻 一博; 浅田 秀樹; 新井 宏二; 池上 健; 石川 毅彦; 石崎 秀晴; 石原 秀樹; 和泉 究; 市來 淨與; 瀬戸 直樹; 伊東 宏之; 伊藤 洋介; 井上 開輝; 植田 憲一; 牛場 崇文; 歌島 昌由; 江口 智士; 江尻 悠美子; 榎 基宏; 戎崎 俊一; 中村 卓史; 江里口 良治; 大石 奈緒子; 大河 正志; 大橋 正健; 大原 謙一; 大渕 喜之; 岡田 健志; 岡田 則夫; 奥富 弘基; 河島 信樹; 坪野 公夫; 川添 史子; 河野 功; 木内 建太; 岸本 直子; 國中 均; 國森 裕生; 黒田 和明; 黒柳 幸子; 小泉 宏之; 洪 鋒雷; 佐藤 修一; 郡 和範; 穀山 渉; 苔山 圭以子; 古在 由秀; 小嶌 康史; 固武 慶; 小林 史歩; 権藤 里奈; 西條 統之; 齊藤 遼; 田中 貴浩; 阪上 雅昭; 阪田 紫帆里; 佐合 紀親; 佐々木 節; 佐藤 孝; 柴田 大; 柴田 和憲; 正田 亜八香; 真貝 寿明; 末正 有; 船木 一幸; 杉山 直; 鈴木 理恵子; 諏訪 雄大; 宗宮 健太郎; 祖谷 元; 高野 忠; 高橋 走; 高橋 慶太郎; 高橋 弘毅; 高橋 史宜; 沼田 健司; 高橋 龍一; 高橋 竜太郎; 高森 昭光; 田越 秀行; 田代 寛之; 田中 伸幸; 谷口 敬介; 樽家 篤史; 千葉 剛; 陳 たん
日本物理学会講演概要集, 2014 - Observational Constraints on Quintessence: Thawing, Tracker, and Scaling Models
Takeshi Chiba; Antonio De Felice; Shinji Tsujikawa
Physical Review D, Apr. 2013, Refereed, Not invited
Lead - The Constancy of the Constants of Nature: Updates
Takeshi Chiba
Progress of Theoretical Physics, Dec. 2011, Refereed, Not invited
Lead - Shadows of Colliding Black Holes
Daisuke Nitta; Takeshi Chiba; Naoshi Sugiyama
Physical Review D, Sep. 2011, Refereed, Not invited - The Japanese Space Gravitational Wave Antenna: DECIGO
Seiji Kawamura et al.
Classical and Quantum Gravity, Apr. 2011, Refereed, Not invited - Runaway Domain Wall and Space-time Varying alpha
Takeshi Chiba; Masahide Yamaguchi
Journal of Cosmology and Astroparticle Physics, Mar. 2011, Refereed, Not invited
Lead - Prospects for Direct Detection of Inflationary Gravitational Waves by Next Generation Inteferometric Detectors
Sachiko Kuroyanagi; Takeshi Chiba; Naoshi Sugiyama
Physical Review D, Feb. 2011, Refereed, Not invited - Fate of Thermal Log Type Q Balls
Takeshi Chiba; Kohei Kamada; Shinta Kasuya and Masahide Yamaguchi
Physical Review D, Dec. 2010, Refereed, Not invited
Lead - Gravitational waves from Q-ball formation
Takeshi Chiba; Kohei Kamada; Masahide Yamaguchi
Physical Review D - Particles, Fields, Gravitation and Cosmology, Apr. 2010, Refereed, Not invited - DECIGO and DECIGO Pathfinder
M. Ando et al.
Classical and Quantum Gravity, Apr. 2010, Refereed, Not invited - Slow-roll Extended Quintessence
Takeshi Chiba; Masaru Siino; Masahide Yamaguchi
Physical Review D, Apr. 2010, Refereed, Not invited
Lead - Q balls in thermal logarithmic potential
Kohei Kamada; Takeshi Chiba; Shinta Kasuya; Masahide Yamaguchi
Proceedings of the 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010, 2010 - The Equation of State of Tracker Fields
Takeshi Chiba
Physical Review D, Jan. 2010, Refereed, Not invited
Lead - w and w′ of scalar field models of dark energy (vol 73, 063501, 2006)
Takeshi Chiba
PHYSICAL REVIEW D, Dec. 2009 - Slow-roll k-essence
Takeshi Chiba; Sourish Dutta; Robert J. Scherrer
Physical Review D, Aug. 2009, Refereed, Not invited
Lead - DECIGO: The Japanese Space Gravitational Wave Antenna
Shuichi Sato et al.
Journal of Physics: Conference Series, Apr. 2009, Refereed, Not invited - Extended Slow-Roll Conditions and Primordial Fluctuations: Multiple Scalar Fields and Generalized Gravity
Takeshi Chiba; Masahide Yamaguchi
Journal of Cosmology and Astroparticle Physics, 2009, Refereed, Not invited
Lead - DECIGO Pathfinder
Masaki Ando et al.
Classical and Quantum Gravity, 2009, Refereed, Not invited - Optimal location of two laser-interferometric detectors for gravitational wave backgrounds at 100 MHz
Atsushi Nishizawa; Seiji Kawamura; Tomotada Akutsu; Koji Arai; Kazuhiro Yamamoto; Daisuke Tatsumi; Erina Nishida; Masa-Aki Sakagami; Takeshi Chiba; Ryuichi Takahashi; Naoshi Sugiyama
CLASSICAL AND QUANTUM GRAVITY, Nov. 2008, Refereed, Not invited - Initial Conditions for Vector Inflation
Takeshi Chiba
Journal of Cosmology and Astroparticle Physics, Aug. 2008, Refereed, Not invited
Lead - DECIGO Pathfinder
Ando Masaki; Kawamura Seiji; Nakamura Takashi; Tsubono Kimio; Tanaka Takahiro; Funaki Ikkoh; Seto Naoki; Numata Kenji; Sato Shuichia; Ioka Kunihito; Kanda Nobuyuki; Takashima Takeshi; Agatsuma Kazuhiro; Akutsu Tomotada; Akutsu Tomomi; Aoyanagi Koh-suke; Arai Koji; Arase Yuta; Araya Akito; Asada Hideki; Aso Yoichi; Chiba Takeshi; Ebisuzaki Toshikazu; Enoki Motohiro; Eriguchi Yoshiharu; Fujimoto Masa-Katsu; Fujita Ryuichi; Fukushima Mitsuhiro; Futamase Toshifumi; Ganzu Katsuhiko; Harada Tomohiro; Hashimoto Tatsuaki; Hayama Kazuhiro; Hikida Wataru; Himemoto Yoshiaki; Hirabayashi Hisashi; Hiramatsu Takashi; Hong Feng-Lei; Horisawa Hideyuki; Hosokawa Mizuhiko; Ichiki Kiyotomo; Ikegami Takeshi; Inoue Kaiki T; Ishidoshiro Koji; Ishihara Hideki; Ishikawa Takehiko; Ishizaki Hideharu; Ito Hiroyuki; Itoh Yousuke; Kamagasako Shogo; Kawashima Nobuki; Kawazoe Fumiko; Kirihara Hiroyuki; Kishimoto Naoko; Kiuche Kenta; Kobayashi Shiho; Kohri Kazunori; Koizumi Hiroyuki; Kojima Yasufumi; Kokeyama Keiko; Kokuyama Wataru; Kotake Kei; Kozai Yoshihide; Kudoh Hideaki; Kunimori Hiroo; Kuninaka Hitoshi; Kuroda Kazuaki; Maeda Kei-ichi; Matsuhara Hideo; Mino Yasushi; Miyakawa Osamu; Miyoki Shinji; Morimoto Mutsuko Y; Morioka Tomoko; Morisawa Toshiyuki; Moriwaki Shigenori; Mukohyama Shinji; Musha Mitsuru; Nagano Shigeo; Naito Isao; Nakagawa Noriyasu; Nakamura Kouji; Nakano Hiroyuki; Nakao Kenichi; Nakasuka Shinichi; Nakayama Yoshinori; Nishida Erina; Nishiyama Kazutaka; Nishizawa Atsushi; Niwa Yoshito; Ohashi Masatake; Ohishi Naoko; Ohkawa Masashi; Okutomi Akira; Onozato Kouji; Oohara Kenichi; Sago Norichika; Saijo Motoyuki; Sakagami Masaaki; Sakai Shin-ichiro; Sakata Shihori; Sasaki Misao; Sato Takashi; Shibata Masaru; Shinkai Hisaaki; Somiya Kentaro; Sotani Hajime; Sugiyama Naoshi; Suwa Yudai; Tagoshi Hideyuki; Takahashi Kakeru; Takahashi Keitaro; Takahashi Tadayuki; Takahashi Hirotaka; Takahashi Ryuichi; Takahashi Ryutaro; Takamori Akiteru; Takano Tadashi; Taniguchi Keisuke; Taruya Atsushi; Tashiro Hiroyuki; Tokuda Mitsuru; Tokunari Masao; Toyoshima Morio; Tsujikawa Shinji; Tsunesada Yoshiki; Ueda Ken-ichi; Utashima Masayoshi; Yamakawa Hiroshi; Yamamoto Kazuhiro; Yamazaki Toshitaka; Yokoyama Jun'ichi; Yoo Chul-Moon; Yoshida Shijun; Yoshino Taizoh
TAUP2007: TENTH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, 2008, Refereed, Not invited - Laser-interferometric detectors for gravitational wave backgrounds at 100 MHz: Detector design and sensitivity
Atsushi Nishizawa; Seiji Kawamura; Tomotada Akutsu; Koji Arai; Kazuhiro Yamamoto; Daisuke Tatsumi; Erina Nishida; Masa-aki Sakagami; Takeshi Chiba; Ryuichi Takahashi; and Naoshi Sugiyama
Physical Review D, 2008, Refereed, Not invited - Reply to ``Comments on `Solar System constraints to general f(R) gravity'
Takeshi Chiba; Tristan L. Smith and Adrienne L. Erickcek
Physical Review D, 2008, Refereed, Not invited
Lead - Search for a Stochastic Background of 100-MHz Gravitational Waves with Laser Interferometers
Tomotada Akutsu; Seiji Kawamura; Atsushi Nishizawa; Koji Arai; Kazuhiro Yamamoto; Daisuke Tatsumi; Shigeo Nagano; Erina Nishida; Takeshi Chiba; Ryuichi Takahashi; Naoshi Sugiyama; Mitsuhiro Fukushima; Toshitaka Yamazaki; Masa-Katsu Fujimoto
Physical Review Letters, 2008, Refereed, Not invited - Extended Slow-Roll Conditions and Rapid-Roll Conditions
Takeshi Chiba; Masahide Yamaguchi
Journal of Cosmology and Astroparticle Physics, 2008, Refereed, Not invited
Lead - The Japanese Space Gravitational Wave Antenna - DECIGO
Seiji Kawamura et al.
Journal of Physics: Conference Series, 2008, Refereed, Not invited - The Japanese Space Gravitational Wave Antenna; DECIGO
Seiji Kawamura et al.
Journals of Physics: Conference Series, 2008, Refereed, Not invited - DECIGO Pathfinder
Masaki Ando et al.
Journal of Physics: Conference Series, 2008, Refereed, Not invited - Development of a detector pair for very high frequency gravitational waves
T. Akutsu; S. Kawamura; K. Arai; D. Tatsumi; S. Nagano; N. Sugiyama; T. Chiba; R. Takahashi; K. Yamamoto; A. Nishizawa; E. Nishida; M. Fukushima; T. Yamazaki; M.K. Fujimoto
Journal of Physics: Conference Series, 2008, Refereed, Not invited - Laser-Interferometric detectors for gravitational wave background at 100MHz
Nishizawa A; Sakagami M.-A; Kawamura S; Arai K; Yamamoto K; Tatsumi D; Akutsu T; Nishida E; Chiba T; Takahashi R; Sugiyama N
Proceedings of the 17th Workshop on General Relativity and Gravitation in Japan, JGRG 2007, 2007, Refereed, Not invited - Time Variation of the Proton-electron Mass Ratio and the Fine Structure Constant with a Runaway Dilaton
Takeshi Chiba; Tatsuo Kobayashi; Masahide Yamaguchi; Jun'ichi Yokoyama
Physical Review D, 2007, Not refereed, Not invited
Lead - Consistency Relation in Cosmology
Takeshi Chiba; Ryuichi Takahashi
Physical Review D, 2007, Refereed, Not invited
Lead - Effective Search Templates for a Primordial Stochastic Gravitational Wave Background
Takeshi Chiba; Yoshiaki Himemoto; Masahide Yamaguchi; Jun'ichi Yokoyama
Physical Review D, 2007, Refereed, Not invited
Lead - Weak Lensing of Galaxy Clusters in Modified Newtonian Dynamics
Ryuichi Takahashi; Takeshi Chiba
The Astrophysical Journal, 2007, Refereed, Not invited - A Null Test of the Cosmological Constant
Takeshi Chiba; Takashi Nakamura
Progress of Theoretical Physics, 2007, Refereed, Not invited
Lead - Weak lensing of galaxy clusters in relativistic MOND theory
Ryuichi Takahashi; Takeshi Chiba
Proceedings of the 16th Workshop on General Relativity and Gravitation in Japan, JGRG 2006, 2006 - w and w' of Scalar Field Models of Dark Energy
Takeshi Chiba
Physical Review D, 2006, Refereed, Not invited
Lead - The Japanese space gravitational wave antenna-DECIGO
Kawamura et al.
Classical and Quantum Gravity, 2006, Refereed, Not invited - Generalized Gravity and a Ghost
Takeshi Chiba
Journal of Cosmology and Astroparticle Physics, Mar. 2005, Refereed, Not invited
Lead - Numerical Solutions of Inflating Higher Dimensional Global Defects
Satsuki Shimono; Takeshi Chiba
Physical Review D, 2005, Refereed, Not invited - Classifying the Future of Universes with Dark Energy
Takeshi Chiba; Ryuichi Takahashi; Naoshi Sugiyama
Classical and Quantum Gravity, 2005, Refereed, Not invited
Lead - Variation of the Constants of Nature
Takeshi Chiba
Proceedings of the Institute of Natural Sciences, Nihon University, 2005, Refereed, Not invited
Lead - Does Positronium Form in the Universe ?
Takeshi Chiba and Naoshi Sugiyama
Journal of Cosmology and Astroparticle Physics, Jun. 2004, Refereed, Not invited
Lead - WMAP constraints on scalar-tensor cosmology and the variation of the gravitational constant
Ryo Nagata; Takeshi Chiba; Naoshi Sugiyama
Physical Review D - Particles, Fields, Gravitation and Cosmology, 2004, Refereed, Not invited - Baryogenesis in a Flat Direction with Neither Baryon nor Lepton Charge
Takeshi Chiba; Fuminobu Takahashi; Masahide Yamaguchi
Physical Review Letters, 2004, Refereed, Not invited
Lead - Reheating After Quintessential Inflation and Gravitational Waves
Hiroyuki Tashiro; Takeshi Chiba; Misao Sasaki
Classical and Quantum Gravity, 2004, Refereed, Not invited - Scalar-tensor theory after WMAP
Ryo Nagata; Takeshi Chiba; Naoshi Sugiyama
Proceedings of the 6th RESCEU International Symposium on ``Frontier in Astroparticle Physics and Cosmology'', 2004, Not refereed, Not invited - ダークエネルギー問題
千葉 剛
数理科学, Feb. 2003, Not refereed, Not invited
Lead - Supernova Cosmology and the Fine Structure Constant
Takeshi Chiba and Kazunori Kohri
Progress of Theoretical Physics, 2003, Refereed, Not invited
Lead - Observational Consequences of Evolution of Primordial Fluctuations in Scalar-Tensor Cosmology
Ryo Nagata; Takeshi Chiba; Naoshi Sugiyama
Physical Review D, 2002, Refereed, Not invited - Quintessence Cosmology and Varying $\alpha$
Takeshi Chiba and Kazunori Kohri
Progress of Theoretical Physics, 2002, Refereed, Not invited
Lead - Tracking K-essence
Takeshi Chiba
Physical Review D, 2002, Refereed, Not invited
Lead - Lens Model Degeneracy and Cosmological Tests by Strong Gravitational Lensing
Takeshi Chiba and Ryuichi Takahashi
Progress of Theoretical Physics, 2002, Refereed, Not invited
Lead - ダークエネルギー
千葉 剛
科学, Aug. 2001, Not refereed, Not invited
Lead - Gravitational Lens Statistics and Density Profile of Dark Halos
Ryuichi Takahashi and Takeshi Chiba
Astrophysical Journal, 2001, Refereed, Not invited - Extended Quintessence and its Late-time Domination
Takeshi Chiba
Physical Review D, 2001, Refereed, Not invited
Lead - Determining the Equation of State of the Expanding Universe Using a New Independent Variable
Takashi Nakamura and Takeshi Chiba
Astrophysical Journal, 2001, Refereed, Not invited - Constancy of the Constants of Nature
Takeshi Chiba
Proceedings of Frontier of Cosmology and Gravitation, 2001, Not refereed, Not invited
Lead - Feasibility of reconstructing the quintessential potential from SNIa data
T Chiba; T Nakamura
AIP Conference Proceedings, 2001, Not refereed, Not invited
Lead - Extended open inflation
Takeshi Chiba; Masahide Yamaguchi
Physical Review D - Particles, Fields, Gravitation and Cosmology, 2000, Refereed, Not invited - Scalar-Tensor Gravity in a Two 3-brane System
Takeshi Chiba
Physical Review D, 2000, Refereed, Not invited
Lead - Extended Open Inflation
Takeshi Chiba and Masahide Yamaguchi
Physical Review D, 2000, Refereed, Not invited
Lead - Determining the Equation of State of the Universe
Takeshi Chiba
Nuclear Physics B Supplement, 2000, Not refereed, Not invited
Lead - Numerical Study of Inhomogeneous Pre-Big-Bang Inflation
Nuclear Physics B Supplement, 2000, Not refereed, Not invited
Lead - Quintessence, the Gravitational Constant, and Gravity
Takeshi Chiba
Proceedings of the 4th RESCEU International Symposium on ``The Birth and Evolution of the Universe'', 2000, Not refereed, Not invited
Lead - Feasibility of Reconstructing the Quintessential Potential Using SNIa Data
Takeshi Chiba and Takashi Nakamura
Physical Review D, 2000, Refereed, Not invited
Lead - Apparent Horizon Formation and Hoop Conjecture in Non-axisymmetric Spaces
Takeshi Chiba
Physical Review D, 1999, Refereed, Not invited
Lead - Numerical Study of Inhomogeneous Pre-Big-Bang Inflationary Cosmology
Takeshi Chiba
Physical Review D, 1999, Refereed, Not invited
Lead - Resolving the singularity of the Hawking-Turok type instanton
Takeshi Chiba
Physics Letters B, 1998, Refereed, Not invited
Lead - Observational tests of x-matter models
Takeshi Chiba; Naoshi Sugiyama; Takashi Nakamura
Monthly Notices of the Royal Astronomical Society, 1998, Refereed, Not invited
Lead - Imprints of the Metrically-coupled Dilaton on Density Perturbations in Inflationary Cosmology
Takeshi Chiba; Naoshi Sugiyama; Jun'ichi Yokoyama
Nuclear Physics B, 1998, Refereed, Not invited
Lead - Two Boosted Black Holes in Asymptotically de Sitter Space-Time - Relation between Mass and Apparent Horizon Formation -
Takeshi Chiba; Kei-ichi Maeda; Ken-ichi Nakao; Taro Tsukamoto
Physical Review D, 1998, Refereed, Not invited
Lead - Scalar gravitational wave from Oppenheimer-Snyder collapse in scalar-tensor theories of gravity
Tomohiro Harada; Takeshi Chiba; Ken-ichi Nakao; Takashi Nakamura
Physical Review D - Particles, Fields, Gravitation and Cosmology, 1997 - Gravitational Physics in Scalar-Tensor Theories -tests of strong field gravity-
Takeshi Chiba; Tomohiro Harada; Ken-ichi Nakao
Progress of Theoretical Physics Supplement, 1997, Refereed, Not invited
Lead - Generality of inflation and constraints on scalar-tensor theories of gravity
Takeshi Chiba
Classical and Quantum Gravity, 1997, Refereed, Not invited
Lead - The Anisotropy of Cosmic Background Radiation implies the Violation of the Strong Energy Condition in Bianchi type I universe
Takeshi Chiba; Shinji Mukohyama; Takashi Nakamura
Physics Letters B, 1997, Refereed, Not invited
Lead - Disappearance of Black Hole Criticality in Semiclassical General Relativity
Takeshi Chiba and Masaru Siino
Modern Physics Letters A, 1997, Refereed, Not invited
Lead - The Minimum Mass of the First Stars and the Anthropic Principle
Takashi Nakamura; Hideya Uehara; Takeshi Chiba
Progress of Theoretical Physics, 1997, Refereed, Not invited - Scalar Gravitational Waves from Oppenheimer-Snyder Collapse in Scalar-Tensor Theories of Gravity
Tomohiro Harada; {\bf Takeshi Chiba}; Ken-ichi Nakao; Takashi Nakamura
Physical Review D, 1997, Refereed, Not invited - Critical Behavior in the Brans-Dicke theory of Gravitation
Takeshi Chiba and Jiro Soda
Progress of Theoretical Physics, 1996, Refereed, Not invited
Lead - Applying gradient expansion to a perfect fluid and higher dimensions
Takeshi Chiba
General Relativity and Gravitation, 1996, Refereed, Not invited
Lead - Cylindrical Dust Collapse in General Relativity - toward higher dimensional collapse -
Takeshi Chiba
Progress of Theoretical Physics, 1996, Refereed, Not invited
Lead - The Volume Expansion Rate and the Age of the Universe
Takashi Nakamura; Ken-ichi Nakao; Takeshi Chiba; Tetsuya Shiromizu
Monthly Notices of the Royal Astronomical Society, 1995, Refereed, Not invited - The Hubble Parameter in a Void Universe - Effect of the Peculiar Velocity -
Ken-ichi Nakao; Naoteru Gouda; Takeshi Chiba; Satoru Ikeuchi; Takashi Nakamura; Masaru Shibata
Astrophysical Journal, 1995, Refereed, Not invited - Cosmic Hoop Conjecture?
Takeshi Chiba and Kei-ichi Maeda
Physical Review D, 1994, Refereed, Not invited
Lead - Prohibition of Large Inhomogeneity in the Preinflationary Stage
Takeshi Chiba; Ken-ichi Nakao; Takashi Nakamura
Physical Review D, 1994, Refereed, Not invited
Lead - Hoop Conjecture for Apparent Horizon Formation
Takeshi Chiba; Takashi Nakamura; Ken-ichi Nakao; Misao Sasaki
Classical and Quantum Gravity, 1994, Refereed, Not invited
Lead - Masses of Spindle and Cylindrical Naked Singularities
Takeshi Chiba; Ken-ichi Nakao; Takashi Nakamura
Proceedings of the 7th Marcel Grossmann Meeting on General Relativity, 1994, Not refereed, Not invited
Lead
MISC
- 学界ニュース「第13回湯川記念財団・木村利栄理論物理学賞：須山輝明氏、山口昌英氏」
千葉 剛
日本物理学会誌, Jan. 2020, Refereed, Invited
Lead - 24pGJ-6 Space Gavitational-Wave Antenna DECIGO (36) : DECIGO/DPF
Ando Masaki
Meeting Abstracts of the Physical Society of Japan, 2012, Not refereed, Not invited - 新著紹介「ワープする宇宙：5次元時空の謎を解く」
千葉 剛
日本物理学会誌, Mar. 2008, Refereed, Invited
Lead
Books and other publications
- 相対論と宇宙の事典
安東正樹; 白水徹也; 編集幹事; 浅田秀樹; 石橋明浩; 小林努; 真貝寿明; 早田次郎; 谷口敬介, Contributor, 7章7.5, 安東正樹 ・白水徹也 編集幹事/浅田秀樹 ・石橋明浩 ・小林努 ・真貝寿明 ・早田次郎 ・谷口敬介 編
朝倉書店, Jun. 2020 - 宇宙物理学ハンドブック
高原文郎; 家正則; 小玉英雄; 高橋忠幸, Contributor, 4章4.9.7, 高原文郎 ・家正則 ・小玉英雄 ・高橋忠幸 編
朝倉書店, Feb. 2020 - ニュートン別冊「宇宙の７大テーマ」
千葉剛, Joint editor, 千葉剛
ニュートン, Oct. 2015, Not refereed - ニュートン別冊「無と有の物理学」
和田純夫; 千葉剛, Joint editor, 和田純夫、千葉剛
ニュートン, Sep. 2015, Not refereed - ニュートン別冊「宇宙、無からの創生」
マイケル・ターナー; 川崎雅裕; 野本憲一; 千葉剛; 佐藤勝彦, Joint editor, マイケル・ターナー、川崎雅裕、野本憲一、千葉剛、佐藤勝彦
ニュートン, Jan. 2014, Not refereed - ニュートン別冊「ダークマタ―・ダークエネルギー」
千葉 剛; 土居 守, Joint work, 千葉 剛、土居 守
ニュートン, Apr. 2013, Not refereed - ニュートン2012年10月号 特集「ダークエネルギー」
千葉 剛; 土居 守, Joint work, 千葉 剛、土居 守
ニュートン, Aug. 2012, Not refereed - ニュートン別冊「宇宙はどうやって誕生したのか」
マイケル・ターナー; 川崎雅裕; 野本憲一; 千葉剛; 佐藤勝彦, Joint work, マイケル・ターナー、川崎雅裕、野本憲一、千葉剛、佐藤勝彦
ニュートン, Jan. 2011, Not refereed - 別冊・数理科学「量子重力理論 広がる多彩な最前線」VII章「ダークエネルギー問題」
Single work, 179-184
サイエンス社, Oct. 2009, Not refereed - 大人の科学vol.19「ダークエネルギーでわかる宇宙論」
Single work
学研, Mar. 2008, Not refereed - 日本物理学会誌63巻3号、新著紹介「ワープする宇宙：5次元時空の謎を解く」
Single work, 234
日本物理学会, Mar. 2008, Not refereed - 光と物理学 4章「物理定数の時間変化」
千葉 剛, Single work, 千葉 剛
京都大学学術出版会, Oct. 2007, Not refereed - ニュートン別冊「宇宙創造と惑星の誕生」
マイケル・ターナー; 川崎雅裕; 野本憲一; 千葉剛; 佐藤勝彦, Joint work, マイケル・ターナー、川崎雅裕、野本憲一、千葉剛、佐藤勝彦
ニュートン, Feb. 2004, Not refereed - 宇宙を支配する暗黒のエネルギー
千葉 剛, Single work, 千葉 剛
岩波書店, Mar. 2003, Not refereed - 数理科学2003年2月号「素粒子的宇宙論の新展開」ダークエネルギー問題
Single work, 19-25, 千葉 剛
サイエンス社, Feb. 2003 - ニュートン2002年12月号 特集「ダークマターとダークエネルギー 宇宙９６ % の謎」
マイケル・ターナー; 川崎雅裕; 野本憲一; 千葉剛; 佐藤勝彦, Joint work, マイケル・ターナー、川崎雅裕、野本憲一、千葉剛、佐藤勝彦
ニュートン, Oct. 2002, Not refereed
Lectures, oral presentations, etc.
- Integrability of Conformal Killing Vectors in the Eisenhart Lift of Scalar-Field FLRW Cosmology
千葉 剛
第２７回「特異点と時空、および関連する物理」研究会, Aug. 2026, Not invited - ダークエネルギーと宇宙の運命ー加速膨張する宇宙とその未来：ビッグクランチ、ビッグリップ
千葉 剛
朝日カルチャーセンター新宿校「宇宙最大の謎「ダークエネルギー」の正体に迫る！」, May 2026, Invited - Semiclassical path of a black hole interior in (mini)superspace
Takeshi Chiba
Geodesics: Orbits and Rays 2025 (GOR2025), Dec. 2025, Invited - 宇宙創成と量子論
千葉 剛
令和6年度日本大学文理学部公開講座「量子の世界 〜物質・宇宙・コンピュータ〜」, Oct. 2024 - Hydden symmetry of power-law inflation
千葉 剛; 宝利 剛
日本物理学会第７９回年次大会, Sep. 2024, Not invited - Eisenhart Lift for Scalar Field Theories: Hidden Symmetries of Power-Law Inflation
Takeshi Chiba
理論で迫るブラックホール宇宙と時空特異点, Aug. 2024, Invited - Strong equivalence principle, constant-G theory, and spontaneous scalarization
Takeshi Chiba
Gravity - The Next Generation -, Feb. 2022, YITP - ダークエネルギーって何？ー加速膨張する宇宙とその未来ー
千葉 剛
朝日カルチャーセンター「宇宙物理の超入門」, Feb. 2022, 朝日カルチャーセンター, Invited - Conformal and Disformal Invariance of Cosmological Observables
Takeshi Chiba
6th Korea-Japan joint workshop on dark energy, Dec. 2019, Invited - The effect of our local motion on the redshift drift
Takeshi Chiba
2nd Korea-Japan bilateral workshop on string axion cosmology, Jan. 2019, Invited - Reconstructing f(R) gravity from the spectral index
Takeshi Chiba
5th Korea-Japan joint workshop on dark energy, Aug. 2018, Invited - スカラーテンソル重力理論
千葉 剛
第22回新潟・山形合宿研究会, Nov. 2017, Invited - Spin Distribution of Primordial Black Holes
Takeshi Chiba
4th Korea-Japan joint workshop on dark energy, Aug. 2017, Invited - CMB constraints on varying G
Takeshi Chiba
3rd Korea-Japan workshop on Dark Energy, Apr. 2016, Invited - Constancy of the constants of nature
Takeshi Chiba
FPUA 2015, Nov. 2015, Invited - Reconstructing the Inflaton Potential from the Spectral Index
Takeshi Chiba
2nd APCTP-TUS workshop on Dark Energy, Aug. 2015, Invited - Reconstructing the Inflaton Potential from the Spectral Index
Takeshi Chiba
14th Marcel Grossmann Meeting on General Relativity, Jul. 2015, Marcel Grossmann Meeting Local Organizing Committee, Not invited - ビッグバン以前の宇宙からの重力波―理論の立場からー
千葉 剛
Aug. 2014, 朝日カルチャーセンター, Invited - Conformal-Frame (In)dependence of Cosmological Observations in Scalar-Tensor Theory
Takeshi Chiba
27th Texas Symposium on Relativistic Astrophysics, Dec. 2013, Department of Physics at The University of Texas at Dallas, Not invited - Shadows of multi black holes
Japan/Thai workshop in cosmology, Dec. 2012, Not invited - 加速膨張する宇宙
日本大学理工学部物理学科軽井沢オリエンテーション講演会, May 2012, Not invited - 物理定数はどこまで定数か？
日本物理学会第６７回年会, Mar. 2012, Not invited - 暗黒エネルギーをめぐって
第５回湯川記念財団・木村利栄理論物理学賞受賞式, Jan. 2012, Not invited - Constancy of the Constants of Nature: Updates
Summer Institute 2011, Aug. 2011, Not invited - Cosmology with TMT
TMTで切り拓く2020年代の新しい天文学, Oct. 2010, Not invited - Slow-roll dark energy
The 20th Workshop on General Relativity and Gravitation in Japan, Sep. 2010, Not invited - The dynamics and the equation of state of dark energy
特定領域研究 「広視野深宇宙探査によるダークエネルギーの研究」第4回研究会, Mar. 2010, Not invited - Cosmology with TMT
光赤天連シンポジウム『30m地上超大型望遠鏡TMTによる天文学の新展開』, Oct. 2009, Not invited - The Equation of State of Slowly Rolling Scalar Field
IPMU international conference "Dark energy: Lighting up the darkness!", Jun. 2009, Not invited - Parametrizing w
特定領域研究 「広視野深宇宙探査によるダークエネルギーの研究」第３回研究会, Mar. 2009, Not invited - The initial conditions for vector inflation
France-Japan Joint Workshop on the Early Universe, May 2008, Not invited - Consistency Relation in Cosmology
Takeshi Chiba
18th International Conference on General Relativity and Gravitation, Jul. 2007, Not invited - 宇宙を支配する暗黒エネルギー
千葉 剛
日本大学春期公開講座, Jun. 2007, Not invited - Myths and Facts about f(R) Gravity
千葉 剛
RESCEU 第6回「宇宙における時空・物質・構造の進化」研究会, Feb. 2007, Not invited - ダークエネルギー
千葉 剛
平成18年度第二回最新の天文学の普及をめざすワークショップ, Jul. 2006, Not invited - 物理定数の時間変化
千葉 剛
京都大学21世紀COE「物理学の多様性と普遍性の探求拠点」シンポジウム「光と物理学」, Feb. 2006, Not invited - 宇宙論における美
千葉 剛
平成１７年度日本大学文理学部公開講座｢美の諸相」, Nov. 2005, Not invited - 宇宙論における美
千葉 剛
平成１７年度日本大学文理学部公開講座｢美の諸相」, Nov. 2005, Not invited - Modified Gravity
千葉 剛
東北大学21世紀COE「物質階層融合科学の構築」 素粒子・天文合同研究会「初期宇宙の解明と新たな自然像」, Sep. 2005, Not invited - Scalar-Tensor Cosmology
Takeshi Chiba
Tamura Symposium on Particle and Astrophysical Cosmology, Nov. 2004, Not invited - 人間原理と宇宙論
千葉 剛
日本科学哲学会第37回大会, Oct. 2004, Not invited - 宇宙項の証拠
千葉 剛
日本物理学会第57回年会, Mar. 2002, Not invited - 宇宙項
千葉 剛
国際高等研究所研究会「物質の起源」, Jan. 2002, Not invited - Constancy of the Constants of Nature
千葉 剛
宇宙論・重力理論の最前線, Apr. 2001, Not invited - Dark Energy
千葉 剛
理論天文学懇談会, Dec. 2000, Not invited - Reconstructing the Quintessential Potential in Practice
Takeshi Chiba
The tenth workshop on general relativity and gravitation, Sep. 2000, Not invited - Quintessence, the Gravitational Constant, and Gravity
Takeshi Chiba
The 4th RESCEU International Symposium on ``The Birth and Evolution of the Universe'', Nov. 1999, Not invited - Phantom field
Takeshi Chiba
The nineth workshop on general relativity and gravitation, Nov. 1999, Not invited - Resolution of spacetime singularities
Takeshi Chiba
The eighth workshop on general relativity and gravitation, Oct. 1998, Not invited - Black Hole Binary Formation in the Expanding Universe
Takeshi Chiba
The seventh workshop on general relativity and gravitation, Oct. 1997, Not invited - Constraints on Scalar-Tensor Theories of Gravity from Density Perturbations in Inflationary Cosmology
Takeshi Chiba
The sixth workshop on general relativity and gravitation, Dec. 1996 - Constraints on Scalar-Tensor Theories of Gravity fromDensity Perturbations in Inflationary Cosmology
Takeshi Chiba
The sixth workshop on general relativity and gravitation, Dec. 1996, Not invited - Critical Behavior in the Brans-Dicke Theory of Gravitation
Takeshi Chiba
The fifth workshop on general relativity and gravitation, Jan. 1996, Not invited - Solving the Hamilton-Jacobi equation for General Relativity with Perfect Fluid
Takeshi Chiba
The fourth workshop on general relativity and gravitation, Nov. 1994 - Solving the Hamilton-Jacobi equation for General Relativitywith Perfect Fluid
Takeshi Chiba
The fourth workshop on general relativity and gravitation, Nov. 1994, Not invited - Hoop Conjecture and Cosmological Constant
Takeshi Chiba
The third workshop on general relativity and gravitation, Jan. 1994, Not invited
Courses
Affiliated academic society
Research Themes
- research on cosmological nonlinear and non-perturbative gravitational phenomena
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 01 Apr. 2009 - 31 Mar. 2015
SASAKI Misao; TANAKA Takahiro; SHIROMIZU Tetsuya; SODA Jiro; MUKOHYAMA Shinji; MATSUBARA Takahiko; TAKAHASHI Fuminobu; CHIBA Takeshi; TSUJIKAWA Shinji; ISHIHARA Hideki; YAMAMOTO Kazuhiro; YAMAGUCHI Masahide - Quest for the ultimate theory on the basis of direct observations of the early evolution of the universe
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 23 Jul. 2009 - 31 Mar. 2014
KODAMA Hideo; KAWASAKI Masahiro; YOKOYAMA Jun'ichi; SODA Jiro; TSUJIKAWA Shinji; MUKOHYAMA Shinji; NAKAYAMA Kazunori; KITAZAWA Yoshihisa; CHIBA Takeshi; SHIROMIZU Tetsuya; TANAKA Takahiro; KOHRI Kazunori; TAKAHASHI Fuminobu; NOZZWA Masato; NAKAYAMA Kazunori - What Consist of Milky Way Halo
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 1997 - 1998
NAKAMURA Takashi
