Kobayashi Tsutomu 小林努

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KOBAYASHI Tsutomu 小林努

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Researcher Number	40580212
Other IDs
Affiliation (Current)	2022: 立教大学, 理学部, 教授
Affiliation (based on the past Project Information) *help	2019 – 2022: 立教大学, 理学部, 教授 2012 – 2018: 立教大学, 理学部, 准教授 2011: 京都大学, 次世代研究者育成センター, 特定助教 2010 – 2011: 京都大学, 次世代研究者育成センター, 助教
Review Section/Research Field	Principal Investigator Particle/Nuclear/Cosmic ray/Astro physics / Science and Engineering / Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics Except Principal Investigator Transformative Research Areas, Section (II) / Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Keywords	Principal Investigator 宇宙論 / 修正重力理論 / インフレーション / 重力波 / 重力理論 / 重力 / 修正重力 / 初期宇宙 / 初期特異点 / ダークエネルギー … More / 密度揺らぎ / 初期密度揺らぎ / 原始密度揺らぎ / 中性子星 … More Except Principal Investigator 宇宙論 / 量子情報理論 / 素粒子論 / 物性理論 / ゲージ重力対応 / 物性物理 / テンソルネットワーク / 冷却原子 / 量子ホール効果 / 量子スピン系 / 高次元時空 / ブラックホール / 重力理論 / 一般相対論 / ホログラフィー原理 / 重力 Less

The Natural Laws of Extreme Universe--A New Paradigm for Spacetime and Matter from Q uantum Information
- Principal Investigator
  
  高柳匡
- Project Period (FY)
  2021 – 2025
- Research Category
  
  Grant-in-Aid for Transformative Research Areas (A)
- Review Section
  
  Transformative Research Areas, Section (II)
- Research Institution
  Kyoto University
Mathematical quantum cosmology based on quantum information and its application
- Principal Investigator
  
  白水徹也
- Project Period (FY)
  2021 – 2025
- Research Category
  
  Grant-in-Aid for Transformative Research Areas (A)
- Review Section
  
  Transformative Research Areas, Section (II)
- Research Institution
  Nagoya University
重力による余剰次元の自発的コンパクト化とその宇宙論的帰結Host Researcher
- Host Researcher
  
  小林努
- Project Period (FY)
  2021 – 2022
- Research Category
  
  Grant-in-Aid for JSPS Fellows
- Review Section
  
  Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
- Research Institution
  Rikkyo University
Testing modified theories of gravityPrincipal Investigator
- Principal Investigator
  
  小林努
- Project Period (FY)
  2020 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
- Research Institution
  Rikkyo University
Exploring theories of gravity consistent with gravitational wave observationsPrincipal Investigator
- Principal Investigator
  
  小林努
- Project Period (FY)
  2020 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
- Review Section
  
  Science and Engineering
- Research Institution
  Rikkyo University
Creation of a non-singular universePrincipal Investigator
- Principal Investigator
  
  小林努
- Project Period (FY)
  2018 – 2019
- Research Category
  
  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
- Research Institution
  Rikkyo University
初期特異点のない新しい宇宙モデルとその観測的検証Principal Investigator
- Principal Investigator
  
  小林努
- Project Period (FY)
  2016 – 2017
- Research Category
  
  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
- Review Section
  
  Science and Engineering
- Research Institution
  Rikkyo University
Exploring cosmology and astrophysics based on general scalar-tensor theoriesPrincipal Investigator
- Principal Investigator
  
  KOBAYASHI Tsutomu
- Project Period (FY)
  2016 – 2019
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Particle/Nuclear/Cosmic ray/Astro physics
- Research Institution
  Rikkyo University
Cosmology based on the most general single-field inflation modelPrincipal Investigator
- Principal Investigator
  
  Kobayashi Tsutomu
- Project Period (FY)
  2012 – 2015
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Particle/Nuclear/Cosmic ray/Astro physics
- Research Institution
  Rikkyo University
Modified Gravity and the Accelerated Expansion of the UniversePrincipal Investigator
- Principal Investigator
  
  KOBAYASHI Tsutomu
- Project Period (FY)
  2010 – 2011
- Research Category
  
  Grant-in-Aid for Research Activity Start-up
- Research Field
  
  Particle/Nuclear/Cosmic ray/Astro physics
- Research Institution
  Kyoto University

All 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 Other

All Journal Article Presentation Book

[Book] 相対論と宇宙の事典2020
- Author(s)
  安東正樹、白水徹也、浅田秀樹、石橋明浩、小林努、真貝寿明、早田次郎、谷口敬介
- Total Pages
  432
- Publisher
  朝倉書店
- ISBN
  9784254131284
- Data Source
  KAKENHI-PROJECT-20K03936
[Journal Article] Dynamics of inflation with mutually orthogonal vector fields in a closed universe2021
- Author(s)
  Murata Tomoaki、Kobayashi Tsutomu
- Journal Title
  
  Physical Review D
  
  Volume: 104 Pages: 1-10
- DOI
  10.1103/physrevd.104.083514
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-20H04745, KAKENHI-PROJECT-21F21019, KAKENHI-PROJECT-20K03936
[Journal Article] Gravitational waves in Kasner spacetimes and Rindler wedges in Regge-Wheeler gauge: Formulation of Unruh effect2021
- Author(s)
  Sugiyama Yuuki、Yamamoto Kazuhiro、Kobayashi Tsutomu
- Journal Title
  
  Physical Review D
  
  Volume: 103 Pages: 1-10
- DOI
  10.1103/physrevd.103.083503
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-20K03936, KAKENHI-PROJECT-17K05444, KAKENHI-PLANNED-17H06359, KAKENHI-PUBLICLY-20H04745
[Journal Article] Perturbations and quasinormal modes of black holes with time-dependent scalar hair in shift-symmetric scalar-tensor theories2021
- Author(s)
  Tomikawa Keitaro、Kobayashi Tsutomu
- Journal Title
  
  Physical Review D
  
  Volume: 103 Pages: 1-10
- DOI
  10.1103/physrevd.103.084041
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-20H04745
[Journal Article] Stars disformally coupled to a shift-symmetric scalar field2021
- Author(s)
  Ikeda Tact、Iyonaga Aya、Kobayashi Tsutomu
- Journal Title
  
  Physical Review D
  
  Volume: 104 Pages: 1-13
- DOI
  10.1103/physrevd.104.104009
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-20H04745, KAKENHI-PROJECT-21F21019, KAKENHI-PROJECT-20K03936
[Journal Article] Gravitational wave physics and astronomy in the nascent era2021
- Author(s)
  Arimoto Makoto、Asada Hideki、Cherry Michael L、Tsutomu Kobayashi、他
- Journal Title
  
  Progress of Theoretical and Experimental Physics
  
  Volume: 未定 Pages: 1-83
- DOI
  10.1093/ptep/ptab042
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03936, KAKENHI-PUBLICLY-21H05453, KAKENHI-PROJECT-19H01933, KAKENHI-PROJECT-20H01905, KAKENHI-PROJECT-19K03864
[Journal Article] Distinguishing modified gravity with just two tensorial degrees of freedom from general relativity: Black holes, cosmology, and matter coupling2021
- Author(s)
  Iyonaga Aya、Kobayashi Tsutomu
- Journal Title
  
  Physical Review D
  
  Volume: 104 Pages: 1-16
- DOI
  10.1103/physrevd.104.124020
- Peer Reviewed
- Data Source
  KAKENHI-PUBLICLY-20H04745, KAKENHI-PROJECT-20J11285, KAKENHI-PROJECT-21F21019, KAKENHI-PROJECT-20K03936
[Journal Article] The isotropic attractor solution of axion-SU(2) inflation: universal isotropization in Bianchi type-I geometry2021
- Author(s)
  Wolfson Ira、Maleknejad Azadeh、Murata Tomoaki、Komatsu Eiichiro、Kobayashi Tsutomu
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2021 Pages: 031-031
- DOI
  10.1088/1475-7516/2021/09/031
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-20H04745, KAKENHI-PROJECT-21F21019, KAKENHI-PROJECT-20K03936
[Journal Article] Relativistic stars in a cubic Galileon universe2020
- Author(s)
  Hiromu Ogawa, Tsutomu Kobayashi, and Kazuya Koyama
- Journal Title
  
  Physical Review D
  
  Volume: 101 Pages: 24026-24026
- DOI
  10.1103/physrevd.101.024026
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PLANNED-15H05888, KAKENHI-PUBLICLY-18H04355, KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06359
[Journal Article] Nanohertz gravitational waves from a null-energy-condition violation in the early universe2020
- Author(s)
  Tahara Hiroaki W. H.、Kobayashi Tsutomu
- Journal Title
  
  Physical Review D
  
  Volume: 102 Pages: 1-10
- DOI
  10.1103/physrevd.102.123533
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03936, KAKENHI-PROJECT-19J11640, KAKENHI-PUBLICLY-20H04745
[Journal Article] Primordial tensor non-Gaussianities from general single-field inflation with non-Bunch-Davies initial states2020
- Author(s)
  Akama Shingo、Hirano Shin’ichi、Kobayashi Tsutomu
- Journal Title
  
  Physical Review D
  
  Volume: 102 Pages: 1-9
- DOI
  10.1103/physrevd.102.023513
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03936
[Journal Article] Extended cuscuton as dark energy2020
- Author(s)
  Iyonaga Aya、Takahashi Kazufumi、Kobayashi Tsutomu
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2020 Pages: 004-004
- DOI
  10.1088/1475-7516/2020/07/004
- NAID
  120007124103
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03936, KAKENHI-PROJECT-20J11285
[Journal Article] Primordial non-Gaussianities of scalar and tensor perturbations in general bounce cosmology: Evading the no-go theorem2020
- Author(s)
  Shingo Akama, Shin'chi Hirano, and Tsutomu Kobayashi
- Journal Title
  
  Physical Review D
  
  Volume: 101 Pages: 1-13
- DOI
  10.1103/physrevd.101.043529
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PLANNED-15H05888, KAKENHI-PUBLICLY-18H04355, KAKENHI-PROJECT-17J04865, KAKENHI-PROJECT-18J22305, KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06359
[Journal Article] A new mechanism for freezing extra dimensions with higher-order curvature terms2020
- Author(s)
  Tahara Hiroaki W.H.、Kobayashi Tsutomu、Yokoyama Jun'ichi
- Journal Title
  
  Physics Letters B
  
  Volume: 811 Pages: 135857-135857
- DOI
  10.1016/j.physletb.2020.135857
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-20K03936, KAKENHI-PROJECT-20H00151, KAKENHI-PROJECT-19J11640, KAKENHI-PUBLICLY-20H04745
[Journal Article] UV sensitive one-loop matter power spectrum in degenerate higher-order scalar-tensor theories2020
- Author(s)
  Hirano Shin’ichi、Kobayashi Tsutomu、Yamauchi Daisuke、Yokoyama Shuichiro
- Journal Title
  
  Physical Review D
  
  Volume: 102 Pages: 1-10
- DOI
  10.1103/physrevd.102.103505
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03936, KAKENHI-PROJECT-20K03968, KAKENHI-PROJECT-17K14304, KAKENHI-PROJECT-19H01891, KAKENHI-PUBLICLY-20H04745
[Journal Article] Revisiting slow-roll dynamics and the tensor tilt in general single-field inflation2020
- Author(s)
  Yosuke Mishima and Tsutomu Kobayashi
- Journal Title
  
  Physical Review D
  
  Volume: 101 Pages: 43536-43536
- DOI
  10.1103/physrevd.101.043536
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-15H05888, KAKENHI-PUBLICLY-18H04355, KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06359
[Journal Article] Effective scalar-tensor description of regularized Lovelock gravity in four dimensions2020
- Author(s)
  Kobayashi Tsutomu
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2020 Pages: 013-013
- DOI
  10.1088/1475-7516/2020/07/013
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03936
[Journal Article] Generalized 2D dilaton gravity and kinetic gravity braiding2019
- Author(s)
  Kazufumi Takahashi and Tsutomu Kobayashi
- Journal Title
  
  Class. Quantum Gravity
  
  Volume: 36 Pages: 095003-095003
- DOI
  10.1088/1361-6382/ab1355
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17J06778, KAKENHI-PLANNED-15H05888, KAKENHI-PUBLICLY-18H04355, KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06359
[Journal Article] Horndeski theory and beyond: a review2019
- Author(s)
  Tsutomu Kobayashi
- Journal Title
  
  Reports on Progress in Physics
  
  Volume: 82 Pages: 086901-086901
- DOI
  10.1088/1361-6633/ab2429
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-15H05888, KAKENHI-PUBLICLY-18H04355, KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06359
[Journal Article] Anti-screening of the Galileon force around a disk center hole2019
- Author(s)
  Ogawa Hiromu、Hiramatsu Takashi、Kobayashi Tsutomu
- Journal Title
  
  Modern Physics Letters A
  
  Volume: 34 Pages: 1950013-1950013
- DOI
  10.1142/s0217732319500135
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06359
[Journal Article] General theory of cosmological perturbations in open and closed universes from the Horndeski action2019
- Author(s)
  Akama Shingo、Kobayashi Tsutomu
- Journal Title
  
  Physical Review D
  
  Volume: 99 Pages: 1-13
- DOI
  10.1103/physrevd.99.043522
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PUBLICLY-18H04355, KAKENHI-PROJECT-18J22305, KAKENHI-PLANNED-17H06359
[Journal Article] Constraining degenerate higher-order scalar-tensor theories with linear growth of matter density fluctuations2019
- Author(s)
  Shin'ichiro Hirano, Tsutomu Kobayashi, Daisuke Yamauchi, Shuichiro Yokoyama
- Journal Title
  
  Physical Review D
  
  Volume: 99 Pages: 1-10
- DOI
  10.1103/physrevd.99.104051
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K14304, KAKENHI-PLANNED-15H05888, KAKENHI-PUBLICLY-18H04355, KAKENHI-PROJECT-17J04865, KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06359
[Journal Article] Screening mechanism in degenerate higher-order scalar-tensor theories evading gravitational wave constraints2019
- Author(s)
  Sinh'ichi Hirano, Tsutomu Kobayashi, Daisuke Yamauchi
- Journal Title
  
  Physical Review D
  
  Volume: 99 Pages: 104073-104073
- DOI
  10.1103/physrevd.99.104073
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K14304, KAKENHI-PLANNED-15H05888, KAKENHI-PUBLICLY-18H04355, KAKENHI-PROJECT-17J04865, KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06359
[Journal Article] Extended Cuscuton: Formulation2018
- Author(s)
  Iyonaga Aya、Takahashi Kazufumi、Kobayashi Tsutomu
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2018 Pages: 002-002
- DOI
  10.1088/1475-7516/2018/12/002
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PUBLICLY-18H04355, KAKENHI-PROJECT-17J06778, KAKENHI-PLANNED-17H06359
[Journal Article] Parity-violating gravity and GW1708172018
- Author(s)
  Nishizawa Atsushi、Kobayashi Tsutomu
- Journal Title
  
  Physical Review D
  
  Volume: 98 Pages: 1-5
- DOI
  10.1103/physrevd.98.124018
- NAID
  120006623784
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06358, KAKENHI-PUBLICLY-18H04355, KAKENHI-PLANNED-17H06359
[Journal Article] Self-anisotropizing inflationary universe in Horndeski theory and beyond2018
- Author(s)
  Tahara Hiroaki W. H.、Nishi Sakine、Kobayashi Tsutomu、Yokoyama Jun'ichi
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2018 Pages: 058-058
- DOI
  10.1088/1475-7516/2018/07/058
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PUBLICLY-18H04355, KAKENHI-PLANNED-17H06359
[Journal Article] Relativistic stars in degenerate higher-order scalar-tensor theories after GW1708172018
- Author(s)
  Kobayashi Tsutomu、Hiramatsu Takashi
- Journal Title
  
  Physical Review D
  
  Volume: 97 Pages: 1-11
- DOI
  10.1103/physrevd.97.104012
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K17707, KAKENHI-ORGANIZER-17H06357, KAKENHI-PUBLICLY-18H04355, KAKENHI-PLANNED-17H06359
[Journal Article] Matter bispectrum beyond Horndeski theories2018
- Author(s)
  Hirano Shin’ichi、Kobayashi Tsutomu、Tashiro Hiroyuki、Yokoyama Shuichiro
- Journal Title
  
  Physical Review D
  
  Volume: 97 Pages: 103517-103517
- DOI
  10.1103/physrevd.97.103517
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K17707, KAKENHI-PLANNED-15H05888, KAKENHI-ORGANIZER-17H06357, KAKENHI-PROJECT-17J04865, KAKENHI-PROJECT-15K17659, KAKENHI-PLANNED-17H06359
[Journal Article] Extended mimetic gravity: Hamiltonian analysis and gradient instabilities2017
- Author(s)
  Takahashi Kazufumi、Kobayashi Tsutomu
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2017 Pages: 038-038
- DOI
  10.1088/1475-7516/2017/11/038
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K17707, KAKENHI-PLANNED-15H05888, KAKENHI-PUBLICLY-16H01102, KAKENHI-ORGANIZER-17H06357, KAKENHI-PROJECT-17J06778, KAKENHI-PLANNED-17H06359
[Journal Article] Healthy imperfect dark matter from effective theory of mimetic cosmological perturbations2017
- Author(s)
  Hirano Shin'ichi、Nishi Sakine、Kobayashi Tsutomu
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2017 Pages: 009-009
- DOI
  10.1088/1475-7516/2017/07/009
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-16K17707, KAKENHI-PROJECT-17J04865, KAKENHI-PUBLICLY-16H01102, KAKENHI-ORGANIZER-17H06357, KAKENHI-PROJECT-15J04044, KAKENHI-PLANNED-17H06359
[Journal Article] General invertible transformation and physical degrees of freedom2017
- Author(s)
  Kazufumi Takahashi, Hayato Motohashi, Teruaki Suyama, Tsutomu Kobayashi
- Journal Title
  
  Physical Review
  
  Volume: 印刷中
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PUBLICLY-16H01102
[Journal Article] Scale-invariant perturbations from NEC violation: A new variant of Galilean Genesis2017
- Author(s)
  Sakine Nishi, Tsutomu Kobayashi
- Journal Title
  
  Physical Review D
  
  Volume: D95 Pages: 1-11
- DOI
  10.1103/physrevd.95.064001
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PUBLICLY-16H01102, KAKENHI-PROJECT-15J04044, KAKENHI-PROJECT-16K17707
[Journal Article] Generalized multi-Galileons, covariantized new terms, and the no-go theorem for non-singular cosmologies2017
- Author(s)
  Shingo Akama, Tsutomu Kobayashi
- Journal Title
  
  Physical Review
  
  Volume: D95 Pages: 1-7
- DOI
  10.1103/physrevd.95.064011
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PUBLICLY-16H01102, KAKENHI-PROJECT-16K17707
[Journal Article] General invertible transformation and physical degrees of freedom2017
- Author(s)
  Kazufumi Takahashi, Hayato Motohashi, Teruaki Suyama, Tsutomu Kobayashi
- Journal Title
  
  Physical Review
  
  Volume: 印刷中
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-16K17707
[Journal Article] Generic instabilities of nonsingular cosmologies in Horndeski theory: A no-go theorem2016
- Author(s)
  Tsutomu Kobayashi
- Journal Title
  
  Physical Review
  
  Volume: D94 Pages: 1-6
- DOI
  10.1103/physrevd.94.043511
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PUBLICLY-16H01102, KAKENHI-PROJECT-16K17707
[Journal Article] Reheating and Primordial Gravitational Waves in Generalized Galilean Genesis2016
- Author(s)
  Sakine Nishi and Tsutomu Kobayashi
- Journal Title
  
  JCAP
  
  Volume: 04 Pages: 018-018
- DOI
  10.1088/1475-7516/2016/04/018
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-15J04044, KAKENHI-PROJECT-24740161
[Journal Article] Instability of hairy black holes in shift-symmetric Horndeski theories2016
- Author(s)
  Hiromu Ogawa, Tsutomu Kobayashi, Teruaki Suyama
- Journal Title
  
  Phys. Rev. D
  
  Volume: 93 Pages: 1-9
- DOI
  10.1103/physrevd.93.064078
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-15K17632, KAKENHI-PUBLICLY-25103505, KAKENHI-PUBLICLY-15H00777, KAKENHI-PROJECT-24740161
[Journal Article] Universal instability of hairy black holes in Lovelock-Galileon theories in D dimensions2016
- Author(s)
  Kazufumi Takahashi, Teruaki Suyama, Tsutomu Kobayashi
- Journal Title
  
  Phys.Rev. D
  
  Volume: 93 Pages: 1-9
- DOI
  10.1103/physrevd.93.064068
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PUBLICLY-25103505, KAKENHI-PUBLICLY-15H00777, KAKENHI-PROJECT-24740161
[Journal Article] Primordial non-Gaussianities of gravitational waves beyond Horndeski theories2016
- Author(s)
  Yuji Akita, Tsutomu Kobayashi
- Journal Title
  
  Phys.Rev. D
  
  Volume: D93 Pages: 1-16
- DOI
  10.1103/physrevd.93.043519
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-24740161
[Journal Article] Ultra Slow-roll G-inflation2016
- Author(s)
  Shin'ichi Hirano, Tsutomu Kobayashi, Shuichiro Yokoyama
- Journal Title
  
  Physical Review D
  
  Volume: D94 Pages: 1-9
- DOI
  10.1103/physrevd.94.103515
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PUBLICLY-16H01102, KAKENHI-PUBLICLY-16H01103, KAKENHI-PROJECT-15K17659, KAKENHI-PROJECT-16K17707
[Journal Article] Removing Ostrogradski's ghost from cosmological perturbations in f(R,R_{mu nu}^2,C_{mu nu rho sigma}^2) gravity2016
- Author(s)
  Yuji Akita, Tsutomu Kobayashi
- Journal Title
  
  MPLA
  
  Volume: 31
- DOI
  10.1142/s021773231650067x
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-24740161
[Journal Article] Breaking of Vainshtein screening in scalar-tensor theories beyond Horndeski2015
- Author(s)
  Tsutomu Kobayashi, Yuki Watanabe, Daisuke Yamauchi
- Journal Title
  
  Physical Review D
  
  Volume: 91 Pages: 064013-064013
- DOI
  10.1103/physrevd.91.064013
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-13J09800, KAKENHI-PROJECT-14J09337, KAKENHI-PROJECT-24740161
[Journal Article] Galilean Creation of the Inflationary Universe2015
- Author(s)
  T. Kobayashi, M. Yamaguchi, J. Yokoyama
- Journal Title
  
  JCAP
  
  Volume: 1507 Pages: 017-017
- DOI
  10.1088/1475-7516/2015/07/017
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-24740161, KAKENHI-PROJECT-15H02082
[Journal Article] Suppressing the primordial tensor amplitude without changing the scalar sector in quadratic curvature gravity2015
- Author(s)
  Kohji Yajima, Tsutomu Kobayashi
- Journal Title
  
  Phys.Rev. D
  
  Volume: D92 Pages: 1-7
- DOI
  10.1103/physrevd.92.103503
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-24740161
[Journal Article] The most general second-order field equations of bi-scalar-tensor theory in four dimensions2015
- Author(s)
  Seiju Ohashi,Tanahashi Norihiro, Tsutomu Kobayashi and Masahide Yamaguchi
- Journal Title
  
  JHEP
  
  Volume: 07 Pages: 008-008
- DOI
  10.1007/jhep07(2015)008
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-13J09997, KAKENHI-PROJECT-24740161
[Journal Article] Generalized galilean genesis2015
- Author(s)
  Sakine Nishi, Tsutomu Kobayashi
- Journal Title
  
  Journal of Cosmology and Astroparticle Physics
  
  Volume: 2015 Pages: 1-18
- DOI
  10.1088/1475-7516/2015/03/057
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-24740161
[Journal Article] Black hole perturbation in the most general scalar-tensor theory with second-order field equations. II. The even-parity sector2014
- Author(s)
  Tsutomu Kobayashi, Hayato Motohashi, Teruaki Suyama
- Journal Title
  
  Physical Review D
  
  Volume: D89 Pages: 1-12
- DOI
  10.1103/physrevd.89.084042
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-24740161
[Journal Article] Exact black hole solutions in shift symmetric scalar-tensor theories2014
- Author(s)
  Tsutomu Kobayashi, Norihiro Tanahashi
- Journal Title
  
  Progress of Theoretical and Experimental Physics
  
  Volume: 073E02 Pages: 1-10
- DOI
  10.1093/ptep/ptu096
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-24740161
[Journal Article] Covariant Stuckelberg analysis of de Rham-Gabadadze-Tolley massive gravity with a general fiducial metric2014
- Author(s)
  Xian Gao, Tsutomu Kobayashi, Masahide Yamaguchi, Daisuke Yoshida
- Journal Title
  
  Physical Review D
  
  Volume: 90 Pages: 124073-124073
- DOI
  10.1103/physrevd.90.124073
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-14J11495, KAKENHI-PROJECT-24740161, KAKENHI-PROJECT-25287054
[Journal Article] Cosmological matching conditionsand galilean genesis in Horndeski's theory2014
- Author(s)
  西咲音、小林努、棚橋典大、山口昌英
- Journal Title
  
  JCAP
  
  Volume: 03 Pages: 008-008
- DOI
  10.1088/1475-7516/2014/03/008
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-13J00755, KAKENHI-PROJECT-21244033, KAKENHI-PROJECT-24740161, KAKENHI-PROJECT-25287054
[Journal Article] Full bispectra from primordial scalar and tensor perturbations in the most general single-field inflation model2013
- Author(s)
  Xian Gao, Tsutomu Kobayashi, Maresuke Shiraishi, Masahide Yamaguchi, Jun'ichi Yokoyama, Shuichiro Yokoyama
- Journal Title
  
  Progress of Theoretical and Experimental Physics
  
  Volume: 未定
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24740161
[Journal Article] Multifield extension of G inflation2013
- Author(s)
  小林努、棚橋典大、山口昌英
- Journal Title
  
  Physical Review D
  
  Volume: 88 Pages: 1-10
- DOI
  10.1103/physrevd.88.083504
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-13J00755, KAKENHI-PROJECT-24740161, KAKENHI-PROJECT-25287054
[Journal Article] Testing general scalar-tensor gravity and massive gravity with cluster lensing2013
- Author(s)
  成川達也、小林努、山内大介、齊藤遼
- Journal Title
  
  Physical Review D
  
  Volume: 87 Pages: 1-10
- DOI
  10.1103/physrevd.87.124006
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-11J03430, KAKENHI-PROJECT-13J09800, KAKENHI-PROJECT-24740161
[Journal Article] Graceful exit from Higgs G inflation2013
- Author(s)
  K.Kamada, T.Kobayashi, T.Kunimitsu, M.Yamaguchi, J.Yokoyama
- Journal Title
  
  Physical Review
  
  Volume: 88 Pages: 1-12
- DOI
  10.1103/physrevd.88.123518
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-21111006, KAKENHI-PROJECT-23340058, KAKENHI-PLANNED-24103006, KAKENHI-PROJECT-24740161
[Journal Article] Nonlinear superhorizon curvature perturbation in generic single-field inflation2013
- Author(s)
  Yu-ichi Takamizu, Tsutomu Kobayashi
- Journal Title
  
  Progress of Theoretical and Experimental Physics
  
  Volume: 未定
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24740161
[Journal Article] Generalized Higgs inflation2012
- Author(s)
  Kohei Kamada, Tsutomu Kobayashi, Tomo Takahashi, Masahide Yamaguchi, Jun'ichi Yokoyama
- Journal Title
  
  Physical Review D
  
  Volume: D86 Pages: 023504-023504
- DOI
  10.1103/physrevd.86.023504
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740187, KAKENHI-PROJECT-23340058, KAKENHI-PROJECT-24740161, KAKENHI-PLANNED-21111006
[Journal Article] Black hole perturbation in the most general scalar-tensor theory with second-order field equations I : the odd-parity sector2012
- Author(s)
  T. Kobayashi, H. Motohashi and T. Suyama
- Journal Title
  
  Phys. Rev.
  
  Volume: D 85 Pages: 84025-84025
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] New Cosmological Solutions in Massive Gravity2012
- Author(s)
  Tsutomu Kobayashi, Masaru Siino, Masahide Yamaguchi, Daisuke Yoshida
- Journal Title
  
  Physical Review D
  
  Volume: D86
- DOI
  10.1103/physrevd.86.061505
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24740161
[Journal Article] Black hole perturbation in the most general scalar-tensor theory with second-order field equations: The odd-parity sector2012
- Author(s)
  T. Kobayashi, H. Motohashi and T. Suyama
- Journal Title
  
  Physical Review D
  
  Volume: 85 Pages: 1-8
- DOI
  10.1103/physrevd.85.084025
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-10J03295, KAKENHI-PROJECT-24740161
[Journal Article] Vainshtein screening in a cosmological background in the most general second-order scalar-tensor theory2012
- Author(s)
  R. Kimura, T. Kobayashi and K. Yamamoto
- Journal Title
  
  Phys. Rev
  
  Volume: D 85 Pages: 24023-24023
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] Vainshtein screening in a cosmological background in the most general second-order scalar-tensor2012
- Author(s)
  R. Kimura, T. Kobayashi, K. Yamamoto
- Journal Title
  
  Physical Review
  
  Volume: 85 Pages: 0240231-11
- DOI
  10.1103/physrevd.85.024023
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540270, KAKENHI-PROJECT-22840011
[Journal Article] Black hole perturbation in the most general scalar-tensor theory with second-order field equations I : the odd-parity sector2012
- Author(s)
  T.Kobayashi, H.Motohashi, T.Suyama
- Journal Title
  
  Physical Review
  
  Volume: (掲載確定)(未定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] Effective gravitational couplings for cosmological perturbations in the most general scalar-tensor theories with second-order field equations2011
- Author(s)
  A.De Felice, T.Kobayashi, S.Tsujikawa
- Journal Title
  
  Physics Letters
  
  Volume: 706 Pages: 123-133
- DOI
  10.1016/j.physletb.2011.11.028
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-09F09029, KAKENHI-PLANNED-21111006, KAKENHI-PROJECT-22840011
[Journal Article] Primordial non-Gaussianity from G-inflation2011
- Author(s)
  T. Kobayashi, M. Yamaguchi, J. Yokoyama
- Journal Title
  
  Phys. Rev
  
  Volume: D 83 Pages: 103524-103524
- NAID
  120003338844
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] Primordial non-Gaussianities of gravitational waves in the most general single-field inflation model2011
- Author(s)
  X. Gao, T. Kobayashi, M. Yamaguchi and J.' i. Yokoyama
- Journal Title
  
  Phys. Rev
  
  Volume: 107 Pages: 211301-211301
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] Effective gravitational couplings for cosmological perturbations in the most general scalar-tensor theories with second-order field equations2011
- Author(s)
  A. De Felice, T. Kobayashi and S. Tsujikawa
- Journal Title
  
  Phys. Lett
  
  Volume: B 706 Pages: 123-123
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] The Music of the Aetherwave-B-mode Polarization in Einstein-Aether Theory2011
- Author(s)
  M. Nakashima and T. Kobayashi
- Journal Title
  
  Phys. Rev
  
  Volume: D 84 Pages: 8451-8451
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] Higgs G-inflation2011
- Author(s)
  K. Kamada, T. Kobayashi, M. Yamaguchi and J. Yokoyama
- Journal Title
  
  Phys. Rev
  
  Volume: D 83 Pages: 83515-83515
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] Primordialnon-Gaussianities of gravitational waves in the most general single-field inflation model2011
- Author(s)
  X. Gao, T. Kobayashi, M. Yamaguchi and J. Yokoyama
- Journal Title
  
  Physical Review Letters
  
  Volume: 107 Pages: 211301-211301
- DOI
  10.1103/physrevlett.107.211301
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-21111006, KAKENHI-PROJECT-21740187, KAKENHI-PROJECT-22840011, KAKENHI-PROJECT-23340058
[Journal Article] Oscillating Bianchi IX Universe in Horava-Lifshitz Gravity2011
- Author(s)
  Y.Misonoh, K.Maeda, T.Kobayashi
- Journal Title
  
  Physical Review
  
  Volume: D84 Pages: 0640301-18
- DOI
  10.1103/physrevd.84.064030
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] Generalized G-inflation : Inflation with the most general second-order field equations2011
- Author(s)
  T. Kobayashi, M. Yamaguchi and J.' i. Yokoyama
- Journal Title
  
  Prog. Theor. Phys
  
  Volume: 126 Pages: 511-511
- NAID
  110008790436
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] Generalized G-inflation: Inflation with the most general second-order field equations2011
- Author(s)
  Tsutomu Kobayashi, Masahide Yamaguchi, Jun'ichi Yokoyama
- Journal Title
  
  Progress of Theoretical Physics
  
  Volume: 126 Issue: 3 Pages: 511-529
- DOI
  10.1143/ptp.126.511
- NAID
  110008790436
- ISSN
  0033-068X, 1347-4081
- Peer Reviewed
- Data Source
  KAKENHI-PLANNED-21111006, KAKENHI-PROJECT-21244033, KAKENHI-PROJECT-21740187, KAKENHI-PROJECT-22840011, KAKENHI-PROJECT-23340058
[Journal Article] G-inflation : Inflation driven by the Galileon field2010
- Author(s)
  Tsutomu Kobayashi, 他
- Journal Title
  
  Phys.Rev.Lett.
  
  Volume: 105
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] G-inflation : inflation driven by the Galileon field2010
- Author(s)
  T. Kobayashi, M. Yamaguchi and J. Yokoyama
- Journal Title
  
  Phys. Rev. Lett
  
  Volume: 105 Pages: 231302-231302
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] Oscillating Universe in Horava-Lifshitz Gravity2010
- Author(s)
  K. i. Maeda, Y. Misonoh and T. Kobayashi
- Journal Title
  
  Phys. Rev
  
  Volume: D 82 Pages: 64024-64024
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Journal Article] Oscillating Bianchi IX Universe in Horava-Lifshitz Gravity
- Author(s)
  Y. Misonoh, K. i. Maeda and T. Kobayashi
- Journal Title
  
  Phys. Rev. D
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Distinguishing modified gravity with just two tensorial degrees of freedom from general relativity2021
- Author(s)
  Tsutomu Kobayashi
- Organizer
  8th Korea-Japan workshop on Dark Energy
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21F21019
[Presentation] Perturbations of black holes in shift-symmetric scalar-tensor theories2021
- Author(s)
  Tsutomu Kobayashi
- Organizer
  QUARKS ONLINE WORKSHOPS 2021 Modification of Gravity Theories and Observations
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21F21019
[Presentation] Perturbations of black holes in shift-symmetric scalar-tensor theories2021
- Author(s)
  Tsutomu Kobayashi
- Organizer
  QUARKS ONLINE WORKSHOPS 2021 Modification of Gravity Theories and Observations
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-20H04745
[Presentation] Perturbations of black holes in shift-symmetric scalar-tensor theories2021
- Author(s)
  Tsutomu Kobayashi
- Organizer
  QUARKS ONLINE WORKSHOPS 2021 Modification of Gravity Theories and Observations
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03936
[Presentation] Distinguishing modified gravity with just two tensorial degrees of freedom from general relativity2021
- Author(s)
  Tsutomu Kobayashi
- Organizer
  8th Korea-Japan workshop on Dark Energy
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03936
[Presentation] Distinguishing modified gravity with just two tensorial degrees of freedom from general relativity2021
- Author(s)
  Tsutomu Kobayashi
- Organizer
  8th Korea-Japan workshop on Dark Energy
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-20H04745
[Presentation] Revisiting slow-roll dynamics and the tensor tilt in general single-field inflation2020
- Author(s)
  Tsutomu Kobayashi
- Organizer
  Cosmic Acceleration
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] Gauss-Bonnet 重力の 4 次元極限の問題点とそのスカラー・テンソル理論による記述2020
- Author(s)
  小林努
- Organizer
  日本物理学会秋季大会
- Data Source
  KAKENHI-PROJECT-20K03936
[Presentation] Nanohertz gravitational waves from NEC violation in the early universe2020
- Author(s)
  Tsutomu Kobayashi
- Organizer
  7th Korea-Japan Workshop on Dark Energy
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03936
[Presentation] Revisiting slow-roll dynamics and the tensor tilt in general single-field inflation2020
- Author(s)
  Tsutomu Kobayashi
- Organizer
  Cosmic Acceleration
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] 一般相対論の拡張と検証2020
- Author(s)
  小林努
- Organizer
  第50回天文・天体物理若手夏の学校
- Invited
- Data Source
  KAKENHI-PROJECT-20K03936
[Presentation] Nanohertz gravitational waves from NEC violation in the early universe2020
- Author(s)
  Tsutomu Kobayashi
- Organizer
  7th Korea-Japan workshop on dark energy
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-20H04745
[Presentation] One-loop matter power spectrum beyond Horndeski2019
- Author(s)
  小林努
- Organizer
  日本物理学会年次大会
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] On the screening mechanism in DHOST theories evading gravitational wave constraints2019
- Author(s)
  Tsutomu Kobayashi
- Organizer
  COSMO 19
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Extended Cuscuton2019
- Author(s)
  Tsutomu Kobayashi
- Organizer
  Why does the Universe accelerate? -Exhaustive study and challenge of the future
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Extended Cuscuton2019
- Author(s)
  Tsutomu Kobayashi
- Organizer
  Why does the Universe accelerate? -Exhaustive study and challenge of the future
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] One-loop matter power spectrum beyond Horndeski2019
- Author(s)
  小林努
- Organizer
  日本物理学会年次大会
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] On the screening mechanism in DHOST theories evading gravitational wave constraints2019
- Author(s)
  Tsutomu Kobayashi
- Organizer
  日本物理学会秋季大会
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Vainshtein mechanism and its breaking in scalar-tensor theories2019
- Author(s)
  Tsutomu Kobayashi
- Organizer
  6th Korea-Japan workshop on dark energy
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] On the screening mechanism in DHOST theories evading gravitational wave constraints2019
- Author(s)
  Tsutomu Kobayashi
- Organizer
  日本物理学会秋季大会
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] On the screening mechanism in DHOST theories evading gravitational wave constraints2019
- Author(s)
  Tsutomu Kobayashi
- Organizer
  COSMO 19
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] Vainshtein mechanism and its breaking in scalar-tensor theories2019
- Author(s)
  Tsutomu Kobayashi
- Organizer
  6th Korea-Japan workshop on dark energy
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] Scalar-tensor theories after GW170817 and relativistic stars in DHOST2018
- Author(s)
  Tsutomu Kobayashi
- Organizer
  MG15
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] Scalar-tensor theories after GW170817 and relativistic stars in DHOST2018
- Author(s)
  Tsutomu Kobayashi
- Organizer
  MOGRA2018
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Parity-violating gravity and GW1708172018
- Author(s)
  小林努
- Organizer
  第 7 回観測的宇宙論ワークショップ
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] Extended mimetic gravity: Hamiltonian analysis and gradient instabilities"2018
- Author(s)
  Tsutomu Kobayashi
- Organizer
  The first annual symposium of the innovative area "Gravitational Wave Physics and Astronomy: Genesis"
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Parity-violating gravity and GW1708172018
- Author(s)
  小林努
- Organizer
  第 7 回観測的宇宙論ワークショップ
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Relativistic stars in degenerate higher-order scalar-tensor theories after GW1708172018
- Author(s)
  Tsutomu Kobayashi
- Organizer
  Essential next steps for gravity and cosmology
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] Extended mimetic gravity: Hamiltonian analysis and gradient instabilities"2018
- Author(s)
  Tsutomu Kobayashi
- Organizer
  The first annual symposium of the innovative area "Gravitational Wave Physics and Astronomy: Genesis"
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-16H01102
[Presentation] Relativistic stars in degenerate higher-order scalar-tensor theories after GW1708172018
- Author(s)
  小林努
- Organizer
  日本物理学会秋季大会
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] 一般相対論とその拡張2018
- Author(s)
  小林努
- Organizer
  第 31 回理論懇シンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Scalar-tensor theories after GW170817 and relativistic stars in DHOST2018
- Author(s)
  Tsutomu Kobayashi
- Organizer
  MG15
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] 一般相対論とその拡張2018
- Author(s)
  小林努
- Organizer
  第 31 回理論懇シンポジウム
- Invited
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] Scalar-tensor theories after GW170817 and relativistic stars in DHOST2018
- Author(s)
  Tsutomu Kobayashi
- Organizer
  MOGRA2018
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] Relativistic stars in degenerate higher-order scalar-tensor theories after GW1708172018
- Author(s)
  Tsutomu Kobayashi
- Organizer
  Essential next steps for gravity and cosmology
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Relativistic stars in degenerate higher-order scalar-tensor theories after GW1708172018
- Author(s)
  小林努
- Organizer
  日本物理学会秋季大会
- Data Source
  KAKENHI-PUBLICLY-18H04355
[Presentation] Generic instabilities of non-singular cosmologies in Horndeski theory: a no-go theorem2017
- Author(s)
  Tsutomu Kobayashi
- Organizer
  COSMO17
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-16H01102
[Presentation] Generic instabilities of non-singular cosmologies in Horndeski theory: a no-go theorem2017
- Author(s)
  Tsutomu Kobayashi
- Organizer
  COSMO17
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Generic instabilities of non-singular cosmologies in second-order theories: A no-go theorem2017
- Author(s)
  Tsutomu Kobayashi
- Organizer
  新学術領域「なぜ宇宙は加速するのか?- 徹底的究明と将来への挑戦 -」
- Place of Presentation
  KEK(茨城県つくば市)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Generic instabilities of non-singular cosmologies in second-order theories: A no-go theorem2017
- Author(s)
  Tsutomu Kobayashi
- Organizer
  新学術領域「なぜ宇宙は加速するのか?- 徹底的究明と将来への挑戦 -」
- Place of Presentation
  KEK(茨城県つくば市)
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-16H01102
[Presentation] Primordial non-Gaussianities of gravitational waves beyond Horndeski2016
- Author(s)
  Tsutomu Kobayashi
- Organizer
  21st International Conference on General Relativity and Gravitation
- Place of Presentation
  Columbia University(ニューヨーク(アメリカ合衆国))
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Generic instabilities of non-singular cosmologies in Horndeski theory: a no-go theorem2016
- Author(s)
  Tsutomu Kobayashi
- Organizer
  JGRG26
- Place of Presentation
  Osaka City University(大阪府大阪市)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K17707
[Presentation] Primordial non-Gaussianities of gravitational waves beyond Horndeski2016
- Author(s)
  Tsutomu Kobayashi
- Organizer
  21st International Conference on General Relativity and Gravitation
- Place of Presentation
  Columbia University(New York, USA)
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-16H01102
[Presentation] Generic instabilities of non-singular cosmologies in Horndeski theory: a no-go theorem2016
- Author(s)
  Tsutomu Kobayashi
- Organizer
  JGRG26
- Place of Presentation
  Osaka City University(大阪府大阪市)
- Int'l Joint Research
- Data Source
  KAKENHI-PUBLICLY-16H01102
[Presentation] Galilean Creation of the Inflationary Universe2015
- Author(s)
  Tsutomu Kobayashi
- Organizer
  Second LeCosPA International Symposium Everything About Gravity
- Place of Presentation
  台北(台湾)
- Year and Date
  2015-12-15
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Breaking of Vainshtein screening in scalar-tensor theories beyond Horndeski2015
- Author(s)
  小林努
- Organizer
  日本物理学会年次大会
- Place of Presentation
  早稲田大学（東京都新宿区）
- Year and Date
  2015-03-21
- Invited
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Galilean Creation of the Inflationary Universe2015
- Author(s)
  小林努
- Organizer
  日本物理学会秋季大会
- Place of Presentation
  大阪市立大学(大阪府大阪市)
- Year and Date
  2015-09-27
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Galilean Creation of the Inflationary Universe2015
- Author(s)
  Tsutomu Kobayashi
- Organizer
  MG14
- Place of Presentation
  ローマ(イタリア)
- Year and Date
  2015-07-14
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] 一般相対論の拡張2014
- Author(s)
  小林努
- Organizer
  背景放射で拓く宇宙創成の物理　～　インフレーションからダークエイジまで～シンポジウム 2014
- Place of Presentation
  理研和光キャンパス（埼玉県和光市）
- Year and Date
  2014-06-03
- Invited
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Exact black hole solutions in shift symmetric scalar-tensor theories2014
- Author(s)
  小林努
- Organizer
  日本物理学会秋季大会
- Place of Presentation
  佐賀大学（佐賀県佐賀市）
- Year and Date
  2014-09-20
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Vainshtein mechanism in the Horndeski theory and beyond2014
- Author(s)
  Tsutomu Kobayashi
- Organizer
  Relativistic Cosmology
- Place of Presentation
  京都大学基礎物理学研究所（京都府京都市）
- Year and Date
  2014-09-09
- Invited
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Generalized Galilean Genesis2014
- Author(s)
  Tsutomu Kobayashi
- Organizer
  CosPA 2014
- Place of Presentation
  オークランド（ニュージーランド）
- Year and Date
  2014-12-09
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Full bispectra from primordial scalar and tensor perturbations in the most general single-field inflation model2013
- Author(s)
  小林努
- Organizer
  日本物理学会年次大会
- Place of Presentation
  広島大学
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Vainshtein screening in a cosmological background in the most general second-order scalar-tensor theory2012
- Author(s)
  T. Kobayashi
- Organizer
  Testing Gravity with Astrophysical and Cosmological Observations
- Place of Presentation
  IPMU,柏
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] ダークエネルギーか修正重力か2012
- Author(s)
  小林努
- Organizer
  日本物理学会年次大会
- Place of Presentation
  関西学院大学
- Year and Date
  2012-03-24
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] 拡張された重力理論の宇宙論、高密度天体における観測可能性の研究2012
- Author(s)
  小林努
- Organizer
  日本物理学会年次大会
- Place of Presentation
  関西学院大学,西宮市
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] 拡張された重力理論の宇宙論、高密度天体における観測可能性の研究2012
- Author(s)
  小林努
- Organizer
  日本物理学会年次大会
- Place of Presentation
  関西学院大学
- Year and Date
  2012-03-25
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Generalized Higgs inflation2012
- Author(s)
  小林努
- Organizer
  日本物理学会秋季大会
- Place of Presentation
  京都産業大学
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Vainshtein screening in a cosmological background in the most general second-order scalar-tensor theory2012
- Author(s)
  小林努
- Organizer
  Testing Gravity with Astrophysical and Cosmological Observations
- Place of Presentation
  東京大学IPMU
- Year and Date
  2012-01-25
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] ダークエネルギーか修正重力か2012
- Author(s)
  小林努
- Organizer
  日本物理学会年次大会
- Place of Presentation
  関西学院大学,西宮市
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] 一般化されたカ〓リレオン場とインフレーション2011
- Author(s)
  小林努
- Organizer
  日本物理学会秋季大会
- Place of Presentation
  弘前大学
- Year and Date
  2011-09-16
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Generalized G-inflation2011
- Author(s)
  T. Kobayashi
- Organizer
  JGRG21
- Place of Presentation
  東北大学
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] G-inflation and generalized G-inflation2011
- Author(s)
  小林努
- Organizer
  The ECTP international conference on primordial QCD Matter in LHC Era
- Place of Presentation
  カイロ、エジプト
- Year and Date
  2011-12-06
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] G-inflation and generalized G-inflation2011
- Author(s)
  T. Kobayashi
- Organizer
  The ECTP international conference on primordial QCD Matter in LHC Era
- Place of Presentation
  カイロ,エジプト
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Generalized Galileons and inflation2011
- Author(s)
  小林努
- Organizer
  「第11回宇宙における時空・物質・構造の進化」研究会
- Place of Presentation
  Dark Energy in the Universe'サマースクール(熊本県阿蘇郡三愛高原ホテル)
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] G-inflation and generalized G-inflation2011
- Author(s)
  T. Kobayashi
- Organizer
  日本・エジプト二国間交流事業「素粒子天体物理学でさく.る初期宇宙の進化
- Place of Presentation
  Egyptian Center for Theoretical Physics, MTI University
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Galileon Cosmology2011
- Author(s)
  小林努
- Organizer
  Summer Institute 2011
- Place of Presentation
  セミナーハウスFuji Calm、富士吉田(招待講演)
- Year and Date
  2011-08-03
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Primordial non-Gaussianity from G-inflation2011
- Author(s)
  小林努
- Organizer
  PASCOS2011
- Place of Presentation
  ケンブリッジ大学、イギリス
- Year and Date
  2011-07-06
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Primordial non-Gaussianity from G-inflation2011
- Author(s)
  T. Kobayashi
- Organizer
  PASCOS 2011
- Place of Presentation
  ケンフ.リッジ大学,イギリス
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] G-inflation and generalized G-inflation2011
- Author(s)
  小林努
- Organizer
  日本・エジプト二国間交流事業「素粒子天体物理学でさぐる初期宇宙の進化」
- Place of Presentation
  MTI大学、エジプト
- Year and Date
  2011-12-01
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Galileon Cosmology2011
- Author(s)
  T. Kobayashi
- Organizer
  ummer Institute 2011(Cosmology & String)
- Place of Presentation
  Seminar House"Fuji Calm",富士吉田
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Generalized Galileons and inflation2011
- Author(s)
  小林努
- Organizer
  第11回宇宙における時空・物質・構造の進化
- Place of Presentation
  熊本県阿蘇郡三愛高原ホテル
- Year and Date
  2011-07-27
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] 一般化されたガリレオン場とインフレーション2011
- Author(s)
  小林努
- Organizer
  日本物理学会秋季大会
- Place of Presentation
  弘前大学,弘前市
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] G-inflation2010
- Author(s)
  T. Kobayashi
- Organizer
  Summer Institute 2010(Cosmology & String)
- Place of Presentation
  Seminar House"Fuji Calm",富士吉田
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] G-inflation2010
- Author(s)
  T. Kobayashi
- Organizer
  COSMO/CosPA 2010
- Place of Presentation
  東京大学本郷キャンパス,日本
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] G-inflation2010
- Author(s)
  T. Kobayashi
- Organizer
  「第10回宇宙における時空・物質・構造の進化」研究会
- Place of Presentation
  高知パレスホテル/高知工科大学
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] G-inflation2010
- Author(s)
  小林努
- Organizer
  COSMO/CosPA 2010
- Place of Presentation
  東京大学
- Year and Date
  2010-09-30
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Galileon scalar-tensor models of dark energy2010
- Author(s)
  小林努
- Organizer
  日本物理学会2010年秋季大会
- Place of Presentation
  九州工業大学
- Year and Date
  2010-09-12
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Galileon scalar-tensor models of dark energy2010
- Author(s)
  小林努
- Organizer
  日本物理学会秋季大会
- Place of Presentation
  九州工業大学戸畑キャンパス,北九州市
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] G-inflation2010
- Author(s)
  小林努
- Organizer
  Summer Institute 2010 (Cosmology & String)
- Place of Presentation
  セミナーハウス富士Calm
- Year and Date
  2010-08-09
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] G-inflation2010
- Author(s)
  小林努
- Organizer
  第10回宇宙における時空・物質・構造の進化研究会
- Place of Presentation
  高知工科大学
- Year and Date
  2010-08-31
- Data Source
  KAKENHI-PROJECT-22840011
[Presentation] Vainshtein mechanism in the most general scalar-tensor theory
- Author(s)
  小林努
- Organizer
  Nonlinear massive gravity theory and its observational test
- Place of Presentation
  京都大学基礎物理学研究所
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Multi-field G-inflation
- Author(s)
  小林努
- Organizer
  日本物理学会秋季大会
- Place of Presentation
  高知大学
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] The most general second-order scalar-tensor theory
- Author(s)
  小林努
- Organizer
  第2回観測的宇宙論ワークショップ
- Place of Presentation
  国立天文台
- Invited
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Cosmology of Generalized Galileons
- Author(s)
  Tsutomu Kobayashi
- Organizer
  GR20/Amaldi10
- Place of Presentation
  ワルシャワ大学（ポーランド）
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Vainshtein mechanism in Horndeski’s general scalar-tensor theory (and in massive gravity)
- Author(s)
  Tsutomu Kobayashi
- Organizer
  Mini-workshop "Massive gravity and its cosmological implications"
- Place of Presentation
  カブリ数物連携宇宙研究機構（Kavli IPUM）
- Invited
- Data Source
  KAKENHI-PROJECT-24740161
[Presentation] Horndeski’s theory: a unified description of modified gravity
- Author(s)
  Tsutomu Kobayashi
- Organizer
  JGRG23
- Place of Presentation
  弘前大学
- Invited
- Data Source
  KAKENHI-PROJECT-24740161

1. 白水徹也 (10282716)

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2. 泉圭介 (90554501)

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3. 高柳匡 (10432353)

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4. 石橋明浩 (10469877)

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5. 中田芳史 (10808992)

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6. 奥西巧一 (30332646)

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18. 野澤真人 (60547321)

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19. WEI HAN

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20. TAKAHASHI Tomo

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21. YAMAGUCHI Masahide

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22. TAKAHASHI Fuminobu

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23. 横山順一

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24. 山本一博

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27. 須山輝明

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31. 藤井通子

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Kobayashi Tsutomu 小林 努

KOBAYASHI Tsutomu 小林 努

Research Projects

Research Products

Co-Researchers

The Natural Laws of Extreme Universe--A New Paradigm for Spacetime and Matter from Q uantum Information

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Mathematical quantum cosmology based on quantum information and its application

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重力による余剰次元の自発的コンパクト化とその宇宙論的帰結Host Researcher

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Testing modified theories of gravityPrincipal Investigator

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Exploring theories of gravity consistent with gravitational wave observationsPrincipal Investigator

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Creation of a non-singular universePrincipal Investigator

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初期特異点のない新しい宇宙モデルとその観測的検証Principal Investigator

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Exploring cosmology and astrophysics based on general scalar-tensor theoriesPrincipal Investigator

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Cosmology based on the most general single-field inflation modelPrincipal Investigator

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Modified Gravity and the Accelerated Expansion of the UniversePrincipal Investigator

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[Book] 相対論と宇宙の事典2020

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[Journal Article] Dynamics of inflation with mutually orthogonal vector fields in a closed universe2021

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[Journal Article] Gravitational waves in Kasner spacetimes and Rindler wedges in Regge-Wheeler gauge: Formulation of Unruh effect2021

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Kobayashi Tsutomu 小林努

KOBAYASHI Tsutomu 小林努