Research on Gravitational Physics based in a Cosmological Setting

• Project/Area Number: 22540291
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Waseda University
• Principal Investigator: MAEDA Kei-ichi 早稲田大学, 理工学術院, 教授 (70199610)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 重力理論 / ダークエネルギー / インフレーション / 素粒子統一理論 / 宇宙論 / 超重力理論 / 超弦理論

Research Abstract

We study most fundamental and important subjects on cosmology as gravitational physics. As for the subject on the early universe, we analyze the so called cosmological singularity problem by Horava-Lifshitz gravity theory and the origin of inflation based on superstring theory. We also study dark energy problem mainly by a bigravity theory. We find that dark energy (a cosmological constant) naturally appears as an attractor in this model.

Research Products

• [Journal Article] Anisotropic universes in the ghost-free bigravity (2013)
  • Author(s): Kei-ichi Maeda,Mikhail S.Volkov
  • Journal Title: Phys. Rev. D Volume: 87 Pages: 104009-104009
  • Peer Reviewed
• [Journal Article] Inflationary Dynamics with a Non-Abelian Gauge Field (2013)
  • Author(s): Kei-ichi Maeda,Kei Yamamoto
  • Journal Title: Phys. Rev. D Volume: 87 Pages: 23528-23528
  • Peer Reviewed
• [Journal Article] Anisotropic universes in the ghost-free bigravity (2013)
  • Author(s): Kei-ichi Maeda,Mikhail S.Volkov
  • Journal Title: hep-th Volume: v1 Pages: 1-17
  • Peer Reviewed
• [Journal Article] Inflationary Dynamics with a Non-Abelian Gauge Field (2013)
  • Author(s): Kei-ichi Maeda,Kei Yamamoto
  • Journal Title: astro-ph.CO Volume: D87 Issue: 2 Pages: 1-18
  • DOI: 10.1103/physrevd.87.023528
  • Peer Reviewed
• [Journal Article] Creation of the universe with a stealth scalar field (2012)
  • Author(s): Hideki Maeda ,Kei-ichi Maeda
  • Journal Title: Phys. Rev. D Volume: 86 Pages: 124045-124045
  • Peer Reviewed
• [Journal Article] Dynamical brane with angles : Collision of the universes (2012)
  • Author(s): Kei-ichi Maeda, Kunihito Uzawa
  • Journal Title: Phys. Rev. D Volume: 85 Pages: 86004-86004
  • Peer Reviewed
• [Journal Article] Accelerating Universes in String Theory via Field Redefinition (2012)
  • Author(s): Kei-ichi Maeda, Nobuyoshi Ohta, Ryo Wakebe
  • Journal Title: Eur.Phys.J. Volume: C72 Pages: 1949-1949
  • Peer Reviewed
• [Journal Article] Creation of the universe with a stealth scalar field (2012)
  • Author(s): Hideki Maeda ,Kei-ichi Maeda
  • Journal Title: Phys.Rev. Volume: D86 Issue: 12 Pages: 1-7
  • DOI: 10.1103/physrevd.86.124045
  • Peer Reviewed
• [Journal Article] Dynamical brane with angles: Collision of the universes (2012)
  • Author(s): Kei-ichi Maeda, Kunihito Uzawa
  • Journal Title: Phys.Rev. Volume: D85 Issue: 8 Pages: 1-18
  • DOI: 10.1103/physrevd.85.086004
  • Peer Reviewed
• [Journal Article] Accelerating Universes in String Theory via Field Redefinition (2012)
  • Author(s): Kei-ichi Maeda, Nobuyoshi Ohta, Ryo Wakebe
  • Journal Title: Eur.Phys.J.C Volume: 72:1949 Pages: 1-18
  • Peer Reviewed
• [Journal Article] Innovation to probe higher dimensions through black holes : Introduction (2011)
  • Author(s): Kei-ichi Maeda, Tetsuya Shiromizu, Takahiro Tanaka
  • Journal Title: Prog.Theor.Phys.Suppl. Volume: 189 Pages: 1-6
  • Peer Reviewed
• [Journal Article] Cosmological rotating black holes in five-dimensional fake supergravity (2011)
  • Author(s): Masato Nozawa, Kei-ichi Maeda
  • Journal Title: Phys. Rev. D Volume: 83 Pages: 24018-24018
• [Journal Article] Dynamical brane with angles : Collision of the universes (2011)
  • Author(s): Kei-ichi Maeda, Kunihito Uzawa
  • Journal Title: Phvs.Rev.D Volume: (to be published) Pages: 1-8
  • Peer Reviewed
• [Journal Article] The Japanese space gravitational wave antenna : DECIGO (2011)
  • Author(s): Seiji Kawamura, et al
  • Journal Title: Class.Quant.Grav. Volume: 28:094011 Pages: 1-12
  • Peer Reviewed
• [Journal Article] Oscillating Bianchi IX Universe in Horava-Lifshitz Gravity (2011)
  • Author(s): Yosuke Misonoh, Kei-ichi Maeda, Tsutomu Kobayashi
  • Journal Title: Phys.Rev D Volume: 84:064030 Pages: 1-18
  • Peer Reviewed
• [Journal Article] Black hole solutions in string theory (2011)
  • Author(s): Kei-ichi Maeda, Masato Nozawa
  • Journal Title: Prog.Theor.Phys.Suppl. Volume: 189 Pages: 310-350
  • Peer Reviewed
• [Journal Article] Dynamics of Void and its Shape in Redshift Space (2011)
  • Author(s): Kei-ichi Maeda, Nobuyuki Sakai, Roland Triay
  • Journal Title: JCAP Volume: 1108:026 Pages: 1-22
  • Peer Reviewed
• [Journal Article] AdS Black Hole Solution in Dilatonic Einstein-Gauss-Bonnet Gravity (2011)
  • Author(s): Kei-ichi Maeda, Nobuyoshi Ohta, Yukinori Sasagawa
  • Journal Title: Phys.Rev.D Volume: 83:044051 Pages: 1-14
  • Peer Reviewed
• [Journal Article] Cosmological rotating black holes in five-dimensional fake supergravity (2011)
  • Author(s): Masato Nozawa, Kei-ichi Maeda
  • Journal Title: Phys.Rev.D Volume: 83:024018 Pages: 1-24
  • Peer Reviewed
• [Journal Article] AdS Black Hole Solution in Dilatonic Einstein-Gauss-Bonnet Gravity. (2011)
  • Author(s): Kei-ichi Maeda, Nobuyoshi Ohta, Yukinori Sasagawa
  • Journal Title: Phys.Rev. Volume: D83 Pages: 44051-44051
  • Peer Reviewed
• [Journal Article] Cosmological rotating black holes in five-dimensional fake supergravity. (2011)
  • Author(s): Masato Nozawa, Kei-ichi Maeda
  • Journal Title: Phys.Rev. Volume: D83 Pages: 24018-24018
  • Peer Reviewed
• [Journal Article] AdS Black Hole Solution in Dilatonic Einstein-Gauss-Bonnet Gravity (2010)
  • Author(s): Kei-ichi Maeda, Nobuyoshi Ohta, Yukinori Sasagawa
  • Journal Title: Phys. Rev. D Volume: 83 Pages: 44051-44051
• [Journal Article] Oscillating Universe in Horava-Lifshitz Gravity (2010)
  • Author(s): Kei-ichi Maeda, Yosuke Misonoh, Tsutomu Kobayashi
  • Journal Title: Phys. Rev. D Volume: 82 Pages: 64024-64024
• [Journal Article] ynamical p-branes with a cosmological constant (2010)
  • Author(s): Kei-ichi Maeda, Masato Minamitsuji, Nobuyoshi Ohta, Kunihito Uzawa
  • Journal Title: Phys. Rev. D Volume: 82 Pages: 46007-46007
• [Journal Article] Black Hole in the Expanding Universe with Arbitrary Power-Law Expansion (2010)
  • Author(s): Kei-ichi Maeda, Masato Nozawa
  • Journal Title: Phys. Rev. D Volume: 81 Pages: 124038-124038
• [Journal Article] Supersymmetric Intersecting Branes on the Waves (2010)
  • Author(s): Kei-ichi Maeda, Nobuyoshi Ohta, Makoto Tanabe, Ryo Wakebe
  • Journal Title: JHEP Volume: 1004 Pages: 13-13
• [Journal Article] Black Hole in the Expanding Universe from Intersecting Branes (2010)
  • Author(s): Kei-ichi Maeda, Masato Nozawa
  • Journal Title: Phys. Rev. D Volume: 81 Pages: 44017-44017
• [Journal Article] Black Holes in an Expanding Universe (2010)
  • Author(s): Gary W.Gibbons, Kei-ichi Maeda
  • Journal Title: Phys. Rev. Lett. Volume: 104 Pages: 131101-131101
• [Journal Article] Oscillating Universe in Horava-Lifshitz Gravity. (2010)
  • Author(s): Kei-ichi Maeda, Yosuke Misonoh, Tsutomu Kobayashi
  • Journal Title: Phys.Rev. Volume: D82 Pages: 64024-64024
  • Peer Reviewed
• [Journal Article] Dynamical p-branes with a cosmological constant. (2010)
  • Author(s): Kei-ichi Maeda, Masato Minamitsuji, Nobuyoshi Ohta, Kunihito Uzawa
  • Journal Title: Phys.Rev. Volume: D82 Pages: 46007-46007
  • Peer Reviewed
• [Journal Article] Black Hole in the Expanding Universe with Arbitrary Power-Law Expansion. (2010)
  • Author(s): Kei-ichi Maeda, Masato Nozawa
  • Journal Title: Phys.Rev. Volume: D81 Pages: 124038-124038
  • Peer Reviewed
• [Journal Article] Supersymmetric Intersecting Branes on the Waves. (2010)
  • Author(s): Kei-ichi Maeda, Nobuyoshi Ohta, Makoto Tanabe, Ryo Wakebe
  • Journal Title: JHEP Volume: 1004 Pages: 13-13
  • Peer Reviewed
• [Journal Article] Black Hole in the Expanding Universe from Intersecting Branes. (2010)
  • Author(s): Kei-ichi Maeda, Masato Nozawa
  • Journal Title: Phys.Rev. Volume: D81 Pages: 44017-44017
  • Peer Reviewed
• [Journal Article] Black Holes in an Expanding Universe. (2010)
  • Author(s): Gary W.Gibbons, Kei-ichi Maeda
  • Journal Title: Phys.Rev.Lett. Volume: 104 Pages: 131101-131101
  • Peer Reviewed
• [Presentation] A Wormhole Black Hole in Horava-Lifshitz Gravity (2013)
  • Author(s): 御園生洋祐、前田恵一
  • Organizer: 日本物理学会
  • Place of Presentation: 広島大学
  • Year and Date: 2013-03-29
• [Presentation] Inflation with Gauge Fields (2012)
  • Author(s): Kei-ichi Maeda
  • Organizer: Workshop Cosmology Montpellier12
  • Place of Presentation: Montpellier, France
  • Year and Date: 2012-10-11
• [Presentation] Dynamical brane with angles in string theory (2012)
  • Author(s): 鵜沢報仁、前田恵一
  • Organizer: 日本物理学会
  • Place of Presentation: Montpellier, France
  • Year and Date: 2012-09-12
• [Presentation] Accelerating Universe in Effective String Theory (2012)
  • Author(s): Kei-ichi Maeda
  • Organizer: Ginzburg Memorial Conference
  • Place of Presentation: Moscow, Russia
  • Year and Date: 2012-05-31
• [Presentation] Field Redefinition and the Observed Universe (2012)
  • Author(s): Kei-ichi Maeda
  • Organizer: Workshop on Testing Gravity with Astrophysics and Cosmological Observations
  • Place of Presentation: IPMU,Tokyo
  • Year and Date: 2012-01-27
• [Presentation] Field Redefinition and the Observed Universe (2012)
  • Author(s): Kei-ichi Maeda
  • Organizer: Testing Gravity with Astrophysical and Cosmological Observations
  • Place of Presentation: IPMU(千葉県)(招待講演)
  • Year and Date: 2012-01-27
• [Presentation] Black holes in an expanding universe (2011)
  • Author(s): Kei-ichi Maeda
  • Organizer: BIRS workshop on Black Holes : New Horizons
  • Place of Presentation: Banff, Canada
  • Year and Date: 2011-11-23
• [Presentation] Black Holes in an Expanding Universe (2011)
  • Author(s): Kei-ichi Maeda
  • Organizer: BIRS workshop on Black Holes : New Horizons
  • Place of Presentation: Bqnff (Canada)(招待講演)
  • Year and Date: 2011-11-23
• [Presentation] Anisotropic spacetime in Horava-Lifshitz gravity (2011)
  • Author(s): Kei-ichi Maeda
  • Organizer: Chinese conference on gravity and cosmology
  • Place of Presentation: Shanxi, China
  • Year and Date: 2011-08-17
• [Presentation] Anisotropic spacetime in Horava-Lifshitz gravity (2011)
  • Author(s): Kei-ichi Maeda
  • Organizer: Chinese conference on gravity and cosmology
  • Place of Presentation: Shanxi Datong (China)(招待講演)
  • Year and Date: 2011-08-15
• [Presentation] Oscillating Bianchi IX Universe in Horava-Lifshitz Gravity (2011)
  • Author(s): 御園生洋祐、前田恵一、小林努
  • Organizer: 日本物理学会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-26
• [Presentation] Time dependent black holes from higher dimensions (2011)
  • Author(s): Kei-ichi Maeda
  • Organizer: IPMU Workshop on Black Holes
  • Place of Presentation: IPMU, Tokyo
• [Presentation] Time-dependent Black Hole from Higher Dimensions (2010)
  • Author(s): Kei-ichi Maeda
  • Organizer: APCTP conference on Frontiers of Black Hole Physics
  • Place of Presentation: Pohang, Korea
  • Year and Date: 2010-12-14
• [Presentation] Dimensional Reduction (2010)
  • Author(s): Kei-ichi Maeda
  • Organizer: JGRG20
  • Place of Presentation: Kyoto Japan
  • Year and Date: 2010-09-23
• [Presentation] Accelerating Cosmologies in Dilatonic Einstein-Gauss-Bonnet Gravity in the String Frame (2010)
  • Author(s): 分部亮、前田恵一、太田信義
  • Organizer: 日本物理学会
  • Place of Presentation: 九州工業大学
  • Year and Date: 2010-09-12
• [Presentation] Oscillating Universe in Horava-Lifshitz Gravity (2010)
  • Author(s): 御園生洋祐、前田恵一、小林努
  • Organizer: 日本物理学会
  • Place of Presentation: 九州工業大学
  • Year and Date: 2010-09-12
• [Presentation] Dynamical brane with angles in string theory
  • Author(s): 鵜沢報仁
  • Organizer: 日本物理学会
  • Place of Presentation: Montpellier, France
• [Presentation] A Wormhole Black Hole in Horava-Lifshitz Gravity
  • Author(s): 御園生洋祐
  • Organizer: 日本物理学会
  • Place of Presentation: 広島大学