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2013 Fiscal Year Annual Research Report

宇宙論的非線形・非摂動重力現象の研究

Research Project

Project/Area Number 21244033
Research InstitutionKyoto University

Principal Investigator

佐々木 節  京都大学, 基礎物理学研究所, 教授 (70162386)

Co-Investigator(Kenkyū-buntansha) 田中 貴浩  京都大学, 理学(系)研究科(研究院), 教授 (40281117)
Project Period (FY) 2009-04-01 – 2015-03-31
Keywordsインフレーション宇宙 / 宇宙の曲率揺らぎ / 修正重力理論 / ブラックホール / 宇宙論的非線形揺らぎ / 宇宙論的非ガウス性 / 宇宙背景輻射 / 宇宙の大規模構造
Outline of Annual Research Achievements

本年度は、様々な重力理論における宇宙の非線形非摂動現象の類似点や相違点に関して、将来を見据えて、メンバーそれぞれが可能な限り幅広く研究を進めた。以下はその主な成果である。
佐々木はゲージ固定をせずに宇宙背景輻射(CMB)解析用の2次摂動ボルツマン方程式を導いた。また重力的非極小結合する複数場インフレーションの非線形曲率揺らぎを調べ、異なる共形計量間での曲率揺らぎの関係を明確にした。さらに量子宇宙論におけるHartle-Hawkingの無境界境界条件の大問題であるインフレーションの起こりにくさが、有質量重力子理論では劇的に改善される可能性を示した。佐々木と田中は、CMBの統計的非等方性に関するこれまでの議論の大きな見落としを指摘し、観測と整合的なモデルの条件を明らかにした。また、田中はインフレーション中の赤外発散問題で、曲率ゆらぎの議論を重力波モードのループ補正にまで拡張し、赤外発散がないことを示した。
連携研究者も多くの成果を上げた。辻川は修正重力理論に基づくインフレーション模型に対する観測的制限をつけた。早田と辻川は新しい非等方インフレーション模型を構成した。山口は質量の重い場の曲率揺らぎへの影響を明らかにした。千葉と山口は観測量は共形変換によらないことを明確に示した。高橋は超重力理論における観測に整合的なインフレーション模型を提唱した。向山は有限質量重力理論やHorava-Lifshitz理論を改良し、観測と整合的で安定な理論を構成した。白水はある種のスカラー場模型では正質量定理の成立は正準的モデルを意味することを示した。山本は銀河団を用いてカメレオン重力理論に対する強い制限を与た。松原は非線形性を取入れた新手法で、大規模構造の3点関数等に対する初期ゆらぎの影響を研究した。石原はKerrブラックホールの角運動量を観測的に推定するための現象を提案した。

Research Progress Status

26年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

26年度が最終年度であるため、記入しない。

  • Research Products

    (57 results)

All 2014 2013 Other

All Journal Article (41 results) (of which Peer Reviewed: 41 results) Presentation (13 results) (of which Invited: 13 results) Book (2 results) Remarks (1 results)

  • [Journal Article] Geodesic $\textit {curve}$-of-sight formulae for the cosmic microwave background: a unified treatment of redshift, time delay, and lensing2014

    • Author(s)
      Saito, Ryo and Naruko, Atsushi and Hiramatsu, Takashi and Sasaki, Misao
    • Journal Title

      JCAP

      Volume: 1410 Pages: 051

    • DOI

      10.1088/1475-7516/2014/10/051

    • Peer Reviewed
  • [Journal Article] Scalar suppression on large scales in open inflation2014

    • Author(s)
      White, Jonathan and Zhang, Ying-li and Sasaki, Misao
    • Journal Title

      Phys.Rev.

      Volume: D90 Pages: 083517

    • DOI

      10.1103/PhysRevD.90.083517

    • Peer Reviewed
  • [Journal Article] Calculating the mass fraction of primordial black holes2014

    • Author(s)
      Young, Sam and Byrnes, Christian T. and Sasaki, Misao
    • Journal Title

      JCAP

      Volume: 1407 Pages: 045

    • DOI

      10.1088/1475-7516/2014/07/045

    • Peer Reviewed
  • [Journal Article] Thin-shell bubbles and information loss problem in anti de Sitter background2014

    • Author(s)
      Sasaki, Misao and Yeom, Dong-han
    • Journal Title

      JHEP

      Volume: 1412 Pages: 155

    • DOI

      10.1007/JHEP12(2014)155

    • Peer Reviewed
  • [Journal Article] Possible existence of viable models of bi-gravity with detectable graviton oscillations by gravitational wave detectors2014

    • Author(s)
      De Felice, Antonio and Nakamura, Takashi and Tanaka, Takahiro
    • Journal Title

      PTEP

      Volume: 2014 Pages: 043E01

    • DOI

      10.1093/ptep/ptu024

    • Peer Reviewed
  • [Journal Article] Effective field theory of modified gravity with two scalar fields: dark energy and dark matter2014

    • Author(s)
      Gergely, Laszlo A. and Tsujikawa, Shinji
    • Journal Title

      Phys.Rev.

      Volume: D89, Pages: 064059

    • DOI

      10.1103/PhysRevD.89.064059

    • Peer Reviewed
  • [Journal Article] Cosmological matching conditions and galilean genesis in Horndeski's theory2014

    • Author(s)
      Nishi, Sakine and Kobayashi, Tsutomu and Tanahashi, Norihiro and Yamaguchi, Masahide
    • Journal Title

      JCAP

      Volume: 1403 Pages: 008

    • DOI

      10.1088/1475-7516/2014/03/008

    • Peer Reviewed
  • [Journal Article] Cosmological Scaling Solutions for Multiple Scalar Fields2014

    • Author(s)
      Chiba, Takeshi and De Felice, Antonio and Tsujikawa, Shinji
    • Journal Title

      Phys. Rev.

      Volume: D 90 Pages: 023516

    • DOI

      10.1103/PhysRevD.90.023516

    • Peer Reviewed
  • [Journal Article] Longevity Problem of Sterile Neutrino Dark Matter2014

    • Author(s)
      Ishida, Hiroyuki and Jeong, Kwang Sik and Takahashi, Fuminobu
    • Journal Title

      Phys.Lett.

      Volume: B731 Pages: 242-247

    • DOI

      10.1016/j.physletb.2014.02.048,

    • Peer Reviewed
  • [Journal Article] Post-Newtonian approximations in the Horava-Lifshitz gravity with extra U(1) symmetry2014

    • Author(s)
      Lin, Kai and Mukohyama, Shinji and Wang, Anzhong and Zhu,Tao
    • Journal Title

      Phys.Rev.

      Volume: D89 Pages: 084022

    • DOI

      10.1103/PhysRevD.89.084022

    • Peer Reviewed
  • [Journal Article] Modeling scalar fields consistent with positive mass2014

    • Author(s)
      Nozawa, Masato and Shiromizu, Tetsuya
    • Journal Title

      Phys.Rev.

      Volume: D89 Pages: 023011

    • DOI

      10.1103/PhysRevD.89.023011

    • Peer Reviewed
  • [Journal Article] Halo/Galaxy Bispectrum with Primordial non-Gaussianity from integrated Perturbation Theory (iPT)2014

    • Author(s)
      Yokoyama, Shuichiro and Matsubara, Takahiko and Taruya, Atsushi
    • Journal Title

      Phys.Rev.

      Volume: D89 Pages: 043524

    • DOI

      10.1103/PhysRevD.89.043524

    • Peer Reviewed
  • [Journal Article] A viable explanation of the CMB dipolar statistical anisotropy2013

    • Author(s)
      Kanno, Sugumi and Sasaki, Misao and Tanaka, Takahiro
    • Journal Title

      PTEP

      Volume: 2013 Pages: 111E01

    • DOI

      10.1093/ptep/ptt093

    • Peer Reviewed
  • [Journal Article] In-in and $\delta N$ calculations of the bispectrum from non-attractor single-field inflation2013

    • Author(s)
      Chen, Xingang and Firouzjahi, Hassan and Komatsu, Eiichiro and Namjoo, Mohammad Hossein and Sasaki, Misao
    • Journal Title

      JCAP

      Volume: 1312 Pages: 039

    • DOI

      10.1088/1475-7516/2013/12/039

    • Peer Reviewed
  • [Journal Article] Hartle-Hawking no-boundary proposal in dRGT massivegravity: Making inflation exponentially more probable2013

    • Author(s)
      Sasaki, Misao and Yeom, Dong-han and Zhang, Ying-li
    • Journal Title

      Class.Quant.Grav.

      Volume: 30 Pages: 232001

    • DOI

      10.1088/0264-9381/30/23/232001

    • Peer Reviewed
  • [Journal Article] Non-linear curvature perturbation in multi-field nflation models with non-minimal coupling2013

    • Author(s)
      White, Jonathan and Minamitsuji, Masato and Sasaki, Misao
    • Journal Title

      JCAP

      Volume: 1309 Pages: 015

    • DOI

      10.1088/1475-7516/2013/09/015

    • Peer Reviewed
  • [Journal Article] Equilateral non-Gaussianity from heavy fields2013

    • Author(s)
      Gong, Jinn-Ouk and Pi, Shi and Sasaki, Misao
    • Journal Title

      JCAP

      Volume: 1311 Pages: 043

    • DOI

      10.1088/1475-7516/2013/11/043

    • Peer Reviewed
  • [Journal Article] Fluid Inflation2013

    • Author(s)
      Chen, Xingang and Firouzjahi, Hassan and Namjoo, Mohammad, Hossein and Sasaki, Misao
    • Journal Title

      JCAP

      Volume: 1309 Pages: 012

    • DOI

      10.1088/1475-7516/2013/09/012,

    • Peer Reviewed
  • [Journal Article] Second-order Boltzmann equation: gauge dependence and gauge invariance2013

    • Author(s)
      Naruko, Atsushi and Pitrou, Cyril and Koyama, Kazuya and Sasaki, Misao
    • Journal Title

      Class.Quant.Grav.

      Volume: 30 Pages: 165008

    • DOI

      10.1088/0264-9381/30/16/165008

    • Peer Reviewed
  • [Journal Article] Observable induced gravitational waves from an early matter phase2013

    • Author(s)
      Alabidi, Laila and Kohri, Kazunori and Sasaki, Misao and Sendouda, Yuuiti
    • Journal Title

      JCAP

      Volume: 1305 Pages: 033

    • DOI

      10.1088/1475-7516/2013/05/033

    • Peer Reviewed
  • [Journal Article] Squeezed primordial bispectrum from general vacuum state2013

    • Author(s)
      Gong, Jinn-Ouk and Sasaki, Misao
    • Journal Title

      Class.Quant.Grav.

      Volume: 30 Pages: 095005

    • DOI

      10.1088/0264-9381/30/9/095005

    • Peer Reviewed
  • [Journal Article] A Single Field Inflation Model with Large Local Non-Gaussianity2013

    • Author(s)
      Chen, Xingang and Firouzjahi, Hassan and Namjoo, Mohammad Hossein and Sasaki, Misao
    • Journal Title

      Europhys.Lett.

      Volume: 102 Pages: 59001

    • DOI

      10.1209/0295-5075/102/59001

    • Peer Reviewed
  • [Journal Article] Loops in inflationary correlation functions2013

    • Author(s)
      Tanaka, Takahiro and Urakawa, Yuko
    • Journal Title

      Class.Quant.Grav.

      Volume: 30 Pages: 233001

    • DOI

      10.1088/0264-9381/30/23/233001

    • Peer Reviewed
  • [Journal Article] Strong restriction on inflationary vacua from the local gauge invariance II: Infrared regularity and absence of secular growth in the Euclidean vacuum2013

    • Author(s)
      Tanaka, Takahiro and Urakawa, Yuko
    • Journal Title

      PTEP

      Volume: 2013 Pages: 063E02

    • DOI

      10.1093/ptep/ptt037

    • Peer Reviewed
  • [Journal Article] Anisotropic power-law k-inflation2013

    • Author(s)
      Ohashi, Junko and Soda, Jiro and Tsujikawa, Shinji
    • Journal Title

      Phys.Rev.

      Volume: D88 Pages: 103517

    • DOI

      10.1103/PhysRevD.88.103517

    • Peer Reviewed
  • [Journal Article] Non-local massive gravity2013

    • Author(s)
      Modesto, Leonardo and Tsujikawa, Shinji
    • Journal Title

      Phys.Lett.

      Volume: B727 Pages: 48-56

    • DOI

      10.1016/j.physletb.2013.10.037

    • Peer Reviewed
  • [Journal Article] Planck constraints on single-field inflation2013

    • Author(s)
      Tsujikawa, Shinji and Ohashi, Junko and Kuroyanagi, Sachiko and De Felice, Antonio
    • Journal Title

      Phys.Rev.

      Volume: D88 Pages: 023529

    • DOI

      10.1103/PhysRevD.88.023529

    • Peer Reviewed
  • [Journal Article] Anisotropic Non-Gaussianity from a Two-Form Field2013

    • Author(s)
      Ohashi, Junko and Soda, Jiro and Tsujikawa, Shinji
    • Journal Title

      Phys.Rev.

      Volume: D87 Pages: 083520

    • DOI

      10.1103/PhysRevD.87.083520

    • Peer Reviewed
  • [Journal Article] Primordial spectra from sudden turning trajectory2013

    • Author(s)
      Noumi, Toshifumi and Yamaguchi, Masahide
    • Journal Title

      JCAP

      Volume: 1312 Pages: 038

    • DOI

      10.1088/1475-7516/2013/12/038

    • Peer Reviewed
  • [Journal Article] Conformal-Frame (In)dependence of Cosmological Observations in Scalar-Tensor Theory2013

    • Author(s)
      Chiba, Takeshi and Yamaguchi, Masahide
    • Journal Title

      JCAP

      Volume: 1310 Pages: 040

    • DOI

      10.1088/1475-7516/2013/10/040

    • Peer Reviewed
  • [Journal Article] Observational Constraints on Quintessence: Thawing,Tracker, and Scaling models2013

    • Author(s)
      Chiba, Takeshi and De Felice, Antonio and Tsujikawa, Shinji
    • Journal Title

      Phys.Rev.

      Volume: D87 Pages: 083505

    • DOI

      10.1103/PhysRevD.87.083505

    • Peer Reviewed
  • [Journal Article] Polynomial Chaotic Inflation in the Planck Era2013

    • Author(s)
      Nakayama, Kazunori and Takahashi, Fuminobu and Yanagida,Tsutomu T.
    • Journal Title

      Phys.Lett.

      Volume: B725 Pages: 111

    • DOI

      10.1016/j.physletb.2013.06.050,

    • Peer Reviewed
  • [Journal Article] New inflation in supergravity after Planck and LHC2013

    • Author(s)
      Takahashi, Fuminobu
    • Journal Title

      Phys.Lett.

      Volume: B727 Pages: 21-26

    • DOI

      10.1016/j.physletb.2013.10.026,

    • Peer Reviewed
  • [Journal Article] Generalized quasi-dilaton theory2013

    • Author(s)
      De Felice, Antonio and Gumrukcuoglu, A. Emir and Mukohyama, Shinji
    • Journal Title

      Phys.Rev.

      Volume: D88 Pages: 124006

    • DOI

      10.1103/PhysRevD.88.124006

    • Peer Reviewed
  • [Journal Article] Nonlinear stability of cosmological solutions in massive gravity2013

    • Author(s)
      De Felice, Antonio and Gumrukcuoglu, A. Emir and Lin, Chunshan and Mukohyama, Shinji
    • Journal Title

      JCAP

      Volume: 1305 Pages: 035

    • DOI

      10.1088/1475-7516/2013/05/035

    • Peer Reviewed
  • [Journal Article] Testing chameleon gravity with the Coma cluster2013

    • Author(s)
      Terukina, Ayumu and Lombriser, Lucas and Yamamoto, Kazuhiro and Bacon, David and Koyama, Kazuya and others
    • Journal Title

      JCAP

      Volume: 1404 Pages: 013

    • DOI

      10.1088/1475-7516/2014/04/013

    • Peer Reviewed
  • [Journal Article] Impacts of satellite galaxies on the redshift-space distortions2013

    • Author(s)
      Hikage, Chiaki and Yamamoto, Kazuhiro
    • Journal Title

      JCAP

      Volume: 1308 Pages: 019

    • DOI

      10.1088/1475-7516/2013/08/019

    • Peer Reviewed
  • [Journal Article] Static spacetimes with/without black holes in dynamical Chern-Simons gravity2013

    • Author(s)
      Shiromizu, Tetsuya and Tanabe, Kentaro
    • Journal Title

      Phys.Rev.

      Volume: D87 Pages: 081504

    • DOI

      10.1103/PhysRevD.87.081504

    • Peer Reviewed
  • [Journal Article] Strictly static spacetimes and positive mass in the Einstein-Gauss-Bonnet theory2013

    • Author(s)
      Shiromizu, Tetsuya and Ohashi, Seiju
    • Journal Title

      Phys.Rev.

      Volume: D87 Pages: 087501

    • DOI

      10.1103/PhysRevD.87.087501

    • Peer Reviewed
  • [Journal Article] Nonlinear stochastic biasing of halos: Analysis of cosmological N-body simulations and perturbation theories2013

    • Author(s)
      Sato, Masanori and Matsubara, Takahiko
    • Journal Title

      Phys.Rev.

      Volume: D87 Pages: 123523

    • DOI

      10.1103/PhysRevD.87.123523,

    • Peer Reviewed
  • [Journal Article] Stable Bound Orbits of Massless Particles around a Black Ring2013

    • Author(s)
      Igata, Takahisa and Ishihara, Hideki and Takamori, Yohsuke,
    • Journal Title

      Phys.Rev.

      Volume: D87 Pages: 104005

    • DOI

      10.1103/PhysRevD.87.104005

    • Peer Reviewed
  • [Presentation] Halo approach and testing gravity with redshift-space distortions2014

    • Author(s)
      山本一博
    • Organizer
      APC-YITP collaboration: mini-workshop on gravitation and cosmology
    • Place of Presentation
      京都
    • Year and Date
      2014-02-07
    • Invited
  • [Presentation] Modeling scalar fields consistent with positive mass2014

    • Author(s)
      白水哲也
    • Organizer
      Mini-Workshop on Gravitation and Cosmology
    • Place of Presentation
      京都
    • Year and Date
      2014-02-07
    • Invited
  • [Presentation] CMB dipolar statistical anisotropy2013

    • Author(s)
      佐々木節
    • Organizer
      SKKU Symposium on Astrophysics and Cosmology: from Particle to Universe
    • Place of Presentation
      スウォン(韓国)
    • Year and Date
      2013-12-02
    • Invited
  • [Presentation] Integrated perturbation theory and its applications2013

    • Author(s)
      松原隆彦
    • Organizer
      Workshop on Galaxy Bias: Non-linear, Non-local and Non-Gaussian
    • Place of Presentation
      トリエステ(イタリア)
    • Year and Date
      2013-10-11
    • Invited
  • [Presentation] Cosmological Perturbations in the Most General Scalar-Tensor Theories2013

    • Author(s)
      辻川信二
    • Organizer
      Seventh Aegean summer school, Beyond Einstein's theory of gravity
    • Place of Presentation
      パロス島 (ギリシャ)
    • Year and Date
      2013-09-24
    • Invited
  • [Presentation] Evading non-Gaussianity consistency in single-field inflation2013

    • Author(s)
      佐々木節
    • Organizer
      International Workshop on Particle Physics and Cosmology after Higgs and Planck
    • Place of Presentation
      重慶(中国)
    • Year and Date
      2013-09-06
    • Invited
  • [Presentation] Primordial spectra from sudden turning trajectory2013

    • Author(s)
      山口昌秀
    • Organizer
      Hot Topics in General Relativity and Gravitation
    • Place of Presentation
      クイノン(ベトナム)
    • Year and Date
      2013-08-01
    • Invited
  • [Presentation] Curvature perturbation in non-minimally coupled multi-scalar models of inflation2013

    • Author(s)
      佐々木節
    • Organizer
      Cosmology after PLANCK
    • Place of Presentation
      北京(中国)
    • Year and Date
      2013-07-26
    • Invited
  • [Presentation] Planck implications for high energy physics2013

    • Author(s)
      高橋史宜
    • Organizer
      String pheno 2013
    • Place of Presentation
      ハンブルグ(ドイツ)
    • Year and Date
      2013-07-18
    • Invited
  • [Presentation] Delta N and Related Topics I, II2013

    • Author(s)
      佐々木節
    • Organizer
      Advanced DPG Physics School on Inflation and CMB
    • Place of Presentation
      バートホネフ(ドイツ)
    • Year and Date
      2013-07-11
    • Invited
  • [Presentation] Massive gravity and cosmology2013

    • Author(s)
      向山信治
    • Organizer
      Cosmological Frontiers in Fundamental Phsyics
    • Place of Presentation
      ワーテルロー(カナダ)
    • Year and Date
      2013-07-08
    • Invited
  • [Presentation] Dynamical Instability of Lovelock Black Holes2013

    • Author(s)
      早田次郎
    • Organizer
      KIAS-YITP joint workshop ``String Theory, Black Holes and Holography"
    • Place of Presentation
      京都
    • Year and Date
      2013-07-05
    • Invited
  • [Presentation] How about modified propagation of Gravitational waves?2013

    • Author(s)
      田中貴浩
    • Organizer
      Gravitational Wave Tests of Alternative Theories of Gravity in the Advanced Detector Era
    • Place of Presentation
      ボーズマン(米国)
    • Year and Date
      2013-04-07
    • Invited
  • [Book] 現代宇宙論講義2013

    • Author(s)
      辻川信二
    • Total Pages
      208頁
    • Publisher
      サイエンス社
  • [Book] 宇宙の扉をノックする2013

    • Author(s)
      リサ・ランドール, 向山信治(監訳), 塩原通緒(翻訳)
    • Total Pages
      616頁
    • Publisher
      NHK出版
  • [Remarks] 宇宙論的非線形・非摂動重力現象の研究

    • URL

      http://www2.yukawa.kyoto-u.ac.jp/~misao.sasaki/KibanA/index.html

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Published: 2016-06-01  

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