Implications of superstring theory for cosmology and black hole physics

• Project/Area Number: 21740216
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization (2011); Okayama Institute for Quantum Physics (2009-2010)
• Principal Investigator: SEKINO Yasuhiro 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 研究員 (50443594)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 素粒子論 / 宇宙物理

Research Abstract

Superstring theory suggests that our universe was created by bubble nucleation in eternal inflation. We constructed a non-perturbative formulation for such a universe. We showed that there are various phases in eternal inflation, and pointed out that the properties of our universe depend on the phase. We also proposed a new mechanism for the generation of temperature fluctuations of cosmic microwave background radiations. Superstring theory suggests that black holes are described by quantum mechanics of matrices. We computed correlation functions of such a matrix model by using analytical and numerical methods.

Research Products

• [Journal Article] CMB Fluctuations and String Compactification Scales (2012)
  • Author(s): Yoshinobu Habara, Hikaru Kawai, Masao Ninomiya and Yasuhiro Sekino
  • Journal Title: Physics Letters B Volume: 707 Pages: 198-202
  • Peer Reviewed
• [Journal Article] Possible origin of CMB temperature fluctuations : Vacuum fluctuations of Kaluza-Klein and string states during inflationary era (2012)
  • Author(s): Yoshinobu Habara, Hikaru Kawai, Masao Ninomiya, Yasuhiro Sekino
  • Journal Title: Physical Review D Volume: (掲載決定済)
  • Peer Reviewed
• [Journal Article] Direct test of the gauge-gravity correspondence for Matrix theory correlation functions (2011)
  • Author(s): Masanori Hanada, Jun Nishimura, Yasuhiro Sekino and Tamiaki Yoneya
  • Journal Title: Journal of High Energy Physics Volume: 1112 Pages: 20-20
  • Peer Reviewed
• [Journal Article] Direct test of the gauge-gravity correspondence for Matrix theory correlation functions (2011)
  • Author(s): M.Hanada, J.Nishimura, Y.Sekino and T.Yoneya
  • Journal Title: JHEP Volume: 1112 Issue: 12 Pages: 20-20
  • DOI: 10.1007/jhep12(2011)020
  • Peer Reviewed
• [Journal Article] On the Topological Phases of Eternal Inflation (2010)
  • Author(s): Yasuhiro Sekino, Stephen Shenker and Leonard Susskind
  • Journal Title: Physical Review D81 Pages: 123515-123515
  • Peer Reviewed
• [Journal Article] Monte Carlo studies of Matrix theory correlation functions (2010)
  • Author(s): Masanori Hanada, Jun Nishimura, Yasuhiro Sekino and Tamiaki Yoneya
  • Journal Title: Physical Review Letters Volume: 104 Pages: 151601-151601
  • Peer Reviewed
• [Journal Article] Topological Phases of Eternal Inflation (2010)
  • Author(s): Yasuhiro Sekino, Stephen Shenker, Leonard Susskind
  • Journal Title: Physical Review D Volume: 81 Pages: 123515-123515
  • Peer Reviewed
• [Journal Article] Monte Carlo studies of Matrix theory correlation functions (2010)
  • Author(s): Masanori Hanada, Jun Nishimura, Yasuffiro Sekino, Tamiaki Yoneya
  • Journal Title: Physical Review Letters 104 Pages: 151601-151601
  • Peer Reviewed
• [Journal Article] Census Taking in the Hat : FRW/CFT Duality (2009)
  • Author(s): Yasuhiro Sekino and Leonard Susskind
  • Journal Title: Physical Review D 80 Pages: 83531-83531
  • Peer Reviewed
• [Journal Article] Census Taking in the Hat : FRw/CFT Duality (2009)
  • Author(s): Yasuhiro Sekino, Leonard Susskind
  • Journal Title: Physical Review D Pages: 83531-83531
  • Peer Reviewed
• [Journal Article] Possible origin of CMB temperature fluctuations : Vacuum fluctuations of Kaluza-Klein and string states during inflationary era
  • Author(s): Yoshinobu Habara, Hikaru Kawai, Masao Ninomiya and Yasuhiro Sekino
  • Journal Title: Physical Review D Volume: (掲載決定)
  • Peer Reviewed
• [Presentation] A novel source of CMB temperature fluctuations : Vacuum fluctuations of Kaluza-Klein and string states during inflationary era (2012)
  • Author(s): 羽原由修(登壇者)、川合光、二宮正夫、関野恭弘
  • Organizer: 日本物理学会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-24
• [Presentation] A novel source of CMB temperature fluctuations : Vacuum fluctuations of Kaluza-Klein and string states during inflationary era (2012)
  • Author(s): 羽原由修(登壇者)、川合光、二宮正夫、関野恭弘
  • Organizer: 日本物理学会
  • Place of Presentation: 関西学院大学(兵庫県)
  • Year and Date: 2012-03-24
• [Presentation] FRW/CFT duality : A holographic framework for eternal inflation (2012)
  • Author(s): 関野恭弘
  • Organizer: KEK理論研究会2012
  • Place of Presentation: 高エネルギー加速器研究機構
  • Year and Date: 2012-03-07
• [Presentation] FRW/CFT duality : A holographic framework for eternal inflation (2012)
  • Author(s): 関野恭弘
  • Organizer: KEK理論研究会2012
  • Place of Presentation: 高エネルギー加速器研究機構(茨城県)(招待講演)
  • Year and Date: 2012-03-07
• [Presentation] FRW/CFT duality : A holographic framework for eternal inflation (2012)
  • Author(s): 関野恭弘
  • Organizer: Asian Winter School on Strings, Particles and Cosmology
  • Place of Presentation: 草津市・ホテルビレッジ草津
  • Year and Date: 2012-01-14
• [Presentation] FRW/CFT duality : A holographic framework for eternal inflation (2012)
  • Author(s): 関野恭弘
  • Organizer: Asian Winter School on Strings, Particles and Cosmology
  • Place of Presentation: ホテルビレッジ草津(群馬県)
  • Year and Date: 2012-01-14
• [Presentation] FRW/CFT duality : A holographic framework for eternal inflation (2011)
  • Author(s): 関野恭弘
  • Organizer: 日本物理学会
  • Place of Presentation: 弘前大学
  • Year and Date: 2011-09-19
• [Presentation] FRW/CFT duality : A holographic framework for eternal inflation (2011)
  • Author(s): 関野恭弘
  • Organizer: 日本物理学会
  • Place of Presentation: 弘前大学(青森県)
  • Year and Date: 2011-09-19
• [Presentation] 宇宙背景輻射のゆらぎと超弦理論のコンパクト化半径について (2011)
  • Author(s): 羽原由修(登壇者)、川合光、二宮正夫、関野恭弘
  • Organizer: 日本物理学会
  • Place of Presentation: 弘前大学
  • Year and Date: 2011-09-17
• [Presentation] 宇宙背景輻射のゆらぎと超弦理論のコンパクト化半径について (2011)
  • Author(s): 羽原由修(登壇者)、川合光、二宮正夫、関野恭弘
  • Organizer: 日本物理学会
  • Place of Presentation: 弘前大学(青森県)
  • Year and Date: 2011-09-17
• [Presentation] Non-perturbative studies of Matrix theory correlation functions and the gauge-gravity correspondence (2011)
  • Author(s): 花田政範、西村淳、関野恭弘(登壇者)、米谷民明
  • Organizer: 日本物理学会
  • Place of Presentation: 弘前大学
  • Year and Date: 2011-09-16
• [Presentation] Non-perturbative studies of Matrix theory correlation functions and the gauge-gravity correspondence (2011)
  • Author(s): 花田政範、西村淳、関野恭弘(登壇者)、米谷民明
  • Organizer: 日本物理学会
  • Place of Presentation: 弘前大学(青森県)
  • Year and Date: 2011-09-16
• [Presentation] Topics in Eternal Inflation (2011)
  • Author(s): 関野恭弘
  • Organizer: Summer Institute 2011
  • Place of Presentation: 富士吉田市・富士Calm
  • Year and Date: 2011-08-06
• [Presentation] Topics in Eternal Inflation (2011)
  • Author(s): 関野恭弘
  • Organizer: Summer Institute 2011
  • Place of Presentation: 富士吉田・富士Calm(山梨県)(招待講演)
  • Year and Date: 2011-08-06
• [Presentation] Correlation functions in FRW/CFT duality (2011)
  • Author(s): 関野恭弘
  • Organizer: 国際会議'Holographic Cosmology 2.0'
  • Place of Presentation: Perimeter Institute for Theoretical Physics
  • Year and Date: 2011-06-24
• [Presentation] Correlation functions in FRW/CFT duality (2011)
  • Author(s): 関野恭弘
  • Organizer: Holographic Cosmology 2.0
  • Place of Presentation: Perimeter Institute for Theoretical Physics(カナダ)(招待講演)
  • Year and Date: 2011-06-24
• [Presentation] Quantum Information in Quantum Gravity and Condensed-Matter Physics, Fast scramblers (2011)
  • Author(s): 関野恭弘
  • Organizer: Aspen Center for Physics
  • Year and Date: 2011-05-23
• [Presentation] Fast scramblers (2011)
  • Author(s): 関野恭弘
  • Organizer: Quantum Information in Quantum Gravity and Condensed-Matter Physics
  • Place of Presentation: Aspen Center for Physics(アメリカ)(招待講演)
  • Year and Date: 2011-05-23
• [Presentation] Topological phases of eternal inflation (2011)
  • Author(s): 関野恭弘
  • Organizer: 静岡大学素粒子集中セミナー
  • Place of Presentation: 静岡大学
  • Year and Date: 2011-01-21
• [Presentation] Topological phases of eternal inflation 2 (2010)
  • Author(s): 関野恭弘
  • Organizer: 理研シンポジウム「場と弦の理論の新たな発展に向けて」
  • Place of Presentation: 理化学研究所
  • Year and Date: 2010-12-18
• [Presentation] Topological phases of eternal inflation 1 (2010)
  • Author(s): 関野恭弘
  • Organizer: 理研シンポジウム「場と弦の理論の新たな発展に向けて」
  • Place of Presentation: 理化学研究所
  • Year and Date: 2010-12-17
• [Presentation] Topological phases of eternal inflation (2010)
  • Author(s): 関野恭弘
  • Organizer: International Conference on Physics in Intense Fields 2010
  • Place of Presentation: 高エネルギー加速器研究機構
  • Year and Date: 2010-11-25
• [Presentation] Topological phases of eternal inflation (2010)
  • Author(s): 関野恭弘
  • Organizer: IPMU Focus Week on String Cosmology
  • Place of Presentation: 東京大学数物連携宇宙研究機構
  • Year and Date: 2010-10-04
• [Presentation] Topological phases of eternal inflation (2010)
  • Author(s): 関野恭弘
  • Organizer: 研究会「重力・幾何・素粒子」
  • Place of Presentation: 大阪市立大学
  • Year and Date: 2010-09-27
• [Presentation] On the topological phases of eternal inflation (2010)
  • Author(s): 関野恭弘(登壇者)、Stephen Shenker、Leonard Susskind
  • Organizer: 日本物理学会
  • Place of Presentation: 九州工業大学
  • Year and Date: 2010-09-14
• [Presentation] On the topological phases of eternal inflation (2010)
  • Author(s): 関野恭弘
  • Organizer: 日本物理学会(秋季大会)
  • Place of Presentation: 九州工業大学
  • Year and Date: 2010-09-14
• [Presentation] FRW/CFT duality (2010)
  • Author(s): 関野恭弘
  • Organizer: Mini-Workshop,` The Measure Problem in Cosmology
  • Place of Presentation: Columbia University
  • Year and Date: 2010-05-16
• [Presentation] Monte Carlo studies of Matrix theory correlation functions (2010)
  • Author(s): 花田政範、西村淳、関野恭弘(登壇者)、米谷民明
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-20
• [Presentation] Monte Carlo studies of Matrix theory correlation functions (2010)
  • Author(s): 関野恭弘
  • Organizer: 日本物理学会「第65回年次大会」
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-20
• [Presentation] Black Holes as Fast Scramblers (2009)
  • Author(s): 関野恭弘
  • Organizer: Summer School on Decoherence, Entanglement and Entropy
  • Place of Presentation: 神戸市・Oxford Kobe Institute
  • Year and Date: 2009-08-10