Takuya Inoue, Eiichiro Komatsu, Wako Aoki, Takeshi Chiba, Toru Misawa, Tomonori Usuda,
The effect of our local motion on the Sandage-Loeb test of the cosmic expansion,
Publ.Astron.Soc.Japan., 72, L1 (2020).
Seiji Kawamura et al.,
Space Gravitational Wave Antenna DECIGO and B-DECIGO,
International Journal of Modern Physics D28, 1845001 (2019).
Sachiko Kuroyanagi, Takeshi Chiba, Tomo Takahashi,
Probing the Universe through the Stochastic Gravitational Wave Background, JCAP, 11 (2018) 038.
Takeshi Chiba,
Reconstructing f(R) Gravity from the Spectral Index, Prog.Theor.Exp.Phys., 2018, 113E01 (2018).
Takeshi Chiba, Shuichiro Yokoyama,
Spin Distribution of Primordial Black Holes, Prog.Theor.Exp.Phys., 2017, 083E01 (2017).
Shuichi Sato et al., The status of DECIGO, J.Phys.Conf.Ser. 840, 012010 (2017).
Junpei Ooba, Kiyotomo Ichiki, Takeshi Chiba, Naoshi Sugiyama,
Cosmological Constraints on Scalar-Tensor Gravity and the Variation of the Gravitational Constant,
Prog.Theor.Exp.Phys., 2017, 043E03 (2017).
Takeshi Chiba and Masashi Kimura,
A Note on Geodecis in the Hayward Metric,
Prog.Theor.Exp.Phys., 2017, 043E01 (2017).
Junpei Ooba, Kiyotomo Ichiki, Takeshi Chiba, Naoshi Sugiyama,
Planck Constraints on Scalar-Tensor Cosmology and the Variation of the Gravitational Constant, Phys. Rev. D93, 122002 (2016).
Takeshi Chiba,
Reconstructing the Inflaton Potential from the Spectral Index,
Prog.Theor.Exp.Phys., 2015, 073E02 (2015).
Takeshi Chiba, Kazunori Kohri,
Consistency Relations for Large Field Inflation: Nonminimal coupling,
Prog.Theor.Exp.Phys., 2015, 023E01 (2015).
Ryo Shiose, Masashi Kimura, Takeshi Chiba,
Motion of Charged Particles around a Weakly Magnetized Rotating Black Hole,
Phys. Rev. D90, 124016 (2014).
Takeshi Chiba, Kazunori Kohri,
Consistency Relations for Large Field Inflation,
Prog.Theor.Exp.Phys. 2014, 093E01 (2014).
Sachiko Kuroyanagi, Shinji Tsujikawa, Takeshi Chiba, Naoshi Sugiyama,
Implication of the B-mode Polarization Measurement for Direct Detection of Inflationary Gravitationary Waves, Phys. Rev. D90, 063513 (2014).
Takeshi Chiba, Antonio De Felice, Shinji Tsujikawa,
Cosmological Scaling Solutions for Multiple Scalar Fields, Phys. Rev. D90, 023516 (2014).
Takeshi Chiba, Masahide Yamaguchi,
Conformal-Frame (In)dependence of Cosmological Observations in Scalar-Tensor Theory, JCAP, 10 (2013) 040.
Takeshi Chiba, Antonio De Felice, Shinji Tsujikawa,
Observational Constraints on Quintessence: Thawing, Tracker, and Scaling Models, Phys. Rev. D87, 083505 (2013).
Seiji Kawamura et al.,
The Japanese Space Gravitational Wave Antenna: DECIGO,
Class. Quantum Grav., 28, 094011 (2011).
Sachiko Kuroyanagi, Takeshi Chiba, Naoshi Sugiyama,
Prospects for Direct Detection of Inflationary Gravitational Waves by Next Generation Inteferometric Detectors, Phys. Rev. D83, 043514 (2011).
Takeshi Chiba, Kohei Kamada, Shinta Kasuya, Masahide Yamaguchi,
Fate of Thermal Log Type Q Balls, Phys. Rev. D82, 103534 (2010).
Shuichi Sato et al., DECIGO: The Japanese Space Gravitational Wave Antenna, J.Phys.Conf.Ser. 154, 012040 (2009).
Takeshi Chiba and Masahide Yamaguchi,
Extended Slow-Roll Conditions and Primordial Fluctuations:
Multiple Scalar Fields and Generalized Gravity,
JCAP, 01 (2009) 019.
Takeshi Chiba and Masahide Yamaguchi,
Extended Slow-Roll Conditions and Rapid-Roll Conditions,
JCAP, 10 (2008) 021.
T. Akutsu et al., Development of a detector pair for very high
frequency gravitational waves,
J.Phys.Conf.Ser. 122, 012007 (2008).
Seiji Kawamura et al., The Japanese Space Gravitational Wave Antenna - DECIGO,
J.Phys.Conf.Ser. 122, 012006 (2008).
Masaki Ando et al., DECIGO Pathfinder,
J.Phys.Conf.Ser. 120, 032005 (2008).
Seiji Kawamura et al., The Japanese Space Gravitational Wave Antenna; DECIGO,
J.Phys.Conf.Ser. 120, 032004 (2008).
Takeshi Chiba,
Initial Conditions for Vector Inflation,
JCAP, 08(2008)004.
Tomotada Akutsu et al., Search for a Stochastic Background of 100 MHz Gravitational Waves with Laser Interferometers,
Phys. Rev. Lett.
101, 101101 (2008).
Takeshi Chiba, Tristan L. Smith and Adrienne L. Erickcek, Reply to "Comments on 'Solar System constraints to general f(R) gravity'", Phys. Rev. D77, 108502 (2008).
Atsushi Nishizawa et al., Optimal Location of Two Laser-interferometric Detectors for Gravitational Wave Backgrounds at 100 MHz,
Class. Quantum Grav., 25, 225011 (2008).
Atsushi Nishizawa et al., Laser-interferometric Detectors for Gravitational Wave Background at 100 MHz: Detector Design and Sensitivity,
Phys. Rev. D77, 022002 (2008).
Takeshi Chiba and Takashi Nakamura, A Null Test of the Cosmological Constant, Prog. Theor. Phys. 118, 815-819 (2007).
Takeshi Chiba and Ryuichi Takahashi,
Consistency Relation in Cosmology,
Phys. Rev. D75, 101301(R) (2007).
Ryuichi Takahashi and Takeshi Chiba,
Weak Lensing of Galaxy Clusters in MOND,
Astrophys.J. 671, 45-52 (2007).
Takeshi Chiba, Tristan L. Smith and Adrienne L. Erickcek,
Solar System Constraints to General f(R) Gravity,
Phys. Rev. D75, 124014 (2007).
Takeshi Chiba, Tatsuo Kobayashi, Masahide Yamaguchi, and Jun'ichi
Yokoyama, Time Variation of the Proton-electron Mass Ratio
and the Fine Structure Constant with a Runaway Dilaton,
Phys. Rev. D75, 043516 (2007).
Seiji Kawamura et al., The Japanese space gravitational wave
antenna-DECIGO, Class. Quantum Grav., 23, S125-S131 (2006).
Takeshi Chiba, w and w' of Scalar Field Models of Dark Energy,
Phys. Rev. D73, 063501 (2006).
Takeshi Chiba, Generalized Gravity and Ghost,
JCAP,03(2005)008.
Takeshi Chiba, Ryuichi Takahashi and Naoshi Sugiyama,
Classifying the Future of Universes with Dark Energy,
Class. Quantum Grav., 22, 3745-3758 (2005).
Satsuki Shimono, Takeshi Chiba,
Numerical Solutions of Inflating Higher Dimensional Global Defects,
Physical Review D71, 084002 (2005).
Takeshi Chiba and Naoshi Sugiyama,
Does Positronium Form in the Universe?,
JCAP,06(2004)003.
Ryo Nagata, Takeshi Chiba, Naoshi Sugiyama,
WMAP Constraints on Scalar-Tensor Cosmology and the Variation of
the Gravitational Constant,
Physical Review D69, 083512 (2004).
Hiroyuki Tashiro, Takeshi Chiba, Misao Sasaki,
Reheating After Quintessential Inflation and Gravitational Waves,
Class. Quantum Grav., 21, 1761-1771 (2004).
Takeshi Chiba, Fuminobu Takahashi, Masahide Yamaguchi,
Baryogenesis in a Flat Direction with Neither Baryon nor Lepton Charge,
Phys. Rev. Lett., 92, 011301 (2004)
Takeshi Chiba and Kazunori Kohri,
Quintessence Cosmology and Varying alpha,
Progress of Theoretical Physics, 107, 631-636 (2002).
Takeshi Chiba and Ryuichi Takahashi,
Lens Model Degeneracy and Cosmological Tests by Strong Gravitational Lensing,
Progress of Theoretical Physics, 107, 625-630 (2002).
Takeshi Chiba,
Constancy of the Constants of Nature,
In the Proceedings of Frontier of Cosmology and
Gravitation, (YITP, Kyoto, April 25-27, 2001).(gr-qc/0110118)
Ryuichi Takahashi and Takeshi Chiba,
Gravitational Lens Statistics and Density Profile of Dark Halos,
The Astrophysical Journal, 563, 489-496 (2001).
Takeshi Chiba,
Extended Quintessence and its Late-time Domination,
Physical Review D64, 103503 (2001).
Takashi Nakamura and Takeshi Chiba,
Determining the Equation of State of the Expanding Universe
Using a New Independent Variable,
The Astrophysical Journal, 550, 1-6 (2001).
Takeshi Chiba and Takashi Nakamura,
Feasibility of Reconstructing the Quintessential Potential Using SNIa Data,
Physical Review D62, 121301(R) (2000).
Takeshi Chiba,
Scalar-Tensor Gravity in a Two 3-brane System,
Physical Review D62, 021502(R) (2000).
Takeshi Chiba and Masahide Yamaguchi,
Extended Open Inflation,
Physical Review D61, 027304 (2000).
Takeshi Chiba,
Quintessence, the Gravitational Constant, and Gravity,
Physical Review D60, 083508 (1999).
Takashi Nakamura and Takeshi Chiba,
Determining the Equation of State of the Expanding Universe: Inverse Problem in Cosmology,
Monthly Notices of the Royal Astronomical Society, 306, 696-700 (1999).
Takeshi Chiba,
Apparent Horizon Formation and Hoop Conjecture in Non-axisymmetric Spaces,
Physical Review D60, 044003 (1999).
Takeshi Chiba,
Numerical Study of Inhomogeneous Pre-Big-Bang Inflationary Cosmology,
Physical Review D59, 083508 (1999).
Takeshi Chiba,
Resolving the singularity of the Hawking-Turok type instanton,
Physics Letters B, 442, 59-62 (1998).
Takeshi Chiba and Takashi Nakamura,
The Luminosity Distance, the Equation of State, and the Geometry of the Universe,
Progress of Theoretical Physics, 100, 1077-1082 (1998).
Takeshi Chiba, Naoshi Sugiyama, Takashi Nakamura,
Observational tests of x-matter models,
Monthly Notices of the Royal Astronomical Society, 301, 72-80 (1998).
Takeshi Chiba, Naoshi Sugiyama, Jun'ichi Yokoyama,
Imprints of the Metrically-coupled Dilaton on Density Perturbations in
Inflationary Cosmology,
Nuclear Physics, B530, 304-324 (1998).
Kunihito Ioka, Takeshi Chiba, Takahiro Tanaka, Takashi Nakamura,
Black Hole Binary Formation in the Expanding Universe -Three Body Problem Approximation -,
Physical Review, D58, 063003 (1998).
Takeshi Chiba, Ken-ichi Nakao, Kei-ichi Maeda, Taro Tsukamoto,
Two Boosted Black Holes in Asymptotically de Sitter Space-Time - Relation between Mass and Apparent Horizon Formation -,
Physical Review, D57, 6119-6126 (1998).
Takeshi Chiba, Tomohiro Harada, Ken-ichi Nakao,
Gravitational Physics in Scalar-Tensor Theories -tests of strong field gravity-, in Perturbative and Numerical Approaches to Gravitational Waves,
Progress of Theoretical Physics Supplement, 128, 335-372 (1997).
Takeshi Chiba,
Generality of inflation and constraints on scalar-tensor theories of gravity,
Classical and Quantum Gravity, 14, 2951-2961 (1997).
Takeshi Chiba, Shinji Mukohyama, Takashi Nakamura,
The Anisotropy of Cosmic Background Radiation implies the Violation of the Strong Energy Condition in Bianchi type I universe,
Physics Letters, B408, 47-51 (1997).
Takeshi Chiba, Naoshi Sugiyama, Takashi Nakamura,
Cosmology with x-matter,
Monthly Notices of the Royal Astronomical Society, 289, L5-L9 (1997).
Takeshi Chiba and Masaru Siino,
Disappearance of Black Hole Criticality in Semiclassical General Relativity,
Modern Physics Letters A, 12 709-718 (1997).
Takashi Nakamura, Hideya Uehara, Takeshi Chiba,
The Minimum Mass of the First Stars and the Anthropic Principle,
Progress of Theoretical Physics, 97, 169-171 (1997).
Tomohiro Harada, Takeshi Chiba, Ken-ichi Nakao, Takashi Nakamura,
Scalar Gravitational Waves from Oppenheimer-Snyder Collapse in Scalar-Tensor Theories of Gravity,
Physical Review, D55, 2024-2037 (1997).
Takeshi Chiba and Jiro Soda,
Critical Behavior in the Brans-Dicke theory of Gravitation,
Progress of Theoretical Physics, 96, 567-574 (1996).
Takeshi Chiba,
Applying gradient expansion to a perfect fluid and higher dimensions,
General Relativity and Gravitation, 28, 1089-1106 (1996).
Takeshi Chiba,
Cylindrical Dust Collapse in General Relativity - toward higher dimensional collapse -,
Progress of Theoretical Physics, 95, 321-338 (1996).
Takashi Nakamura, Ken-ichi Nakao, Takeshi Chiba, Tetsuya Shiromizu,
The Volume Expansion Rate and the Age of the Universe,
Monthly Notices of the Royal Astronomical Society, 276, L41-L44 (1995).
Ken-ichi Nakao, Naoteru Gouda, Takeshi Chiba, Satoru Ikeuchi, Takashi Nakamura, Masaru Shibata,
The Hubble Parameter in a Void Universe - Effect of the Peculiar Velocity -,
The Astrophysical Journal, 453, 541-544 (1995).
Takeshi Chiba, Ken-ichi Nakao, Takashi Nakamura,
Prohibition of Large Inhomogeneity in the Preinflationary Stage,
Physical Review, D49, 3886-3892 (1994).