Studies of the cosmic acceleration mechanism and the origins of the three components in the present universe in extended gravity theories
| Project/Area Number |
25800136
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Fukushima University (2015-2017)
Ochanomizu University (2013-2014) |
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Principal Investigator |
BAMBA Kazuharu 福島大学, 共生システム理工学類, 准教授 (60608719)
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| Project Period (FY) |
2013-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | インフレーション / 現在の宇宙の加速膨張 / 暗黒エネルギー / F(R)重力理論 / 大域的原始宇宙磁場 / 原始重力波 / 宇宙のバリオン数生成 / 暗黒物質 / F(G)重力理論 / F(T)重力理論 / ホログラフィック暗黒エネルギー / F(R,T)重力理論 / バウンス宇宙論 / 流体モデル / テレパラレル重力理論 / bi-metric 重力理論 / トレースアノマリー |
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| Outline of Final Research Achievements |
We have executed the studies in terms of the acceleration mechanism of both inflation in the early universe, which is the rapid cosmic acceleration, and the current accelerated explanations of the universe, and the unified explanations of the origins of the three components in the present universe, namely, dark energy, dark matter and baryons, in extended gravity theories. As a result, it has been shown that the cosmic acceleration can be realized in an extended gravity theory, in which the extensions of gravity in large-scales compared with general relativity are smaller and the additional assumptions are fewer.
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Report
(6 results)
Research Products
(73 results)
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[Presentation] Review on Dark Energy2015
Author(s)
Kazuharu Bamba
Organizer
Workshop on Dark Physics of the Universe
Place of Presentation
National Center for Theoretical Sciences (NCTS), Hsinchu, Taiwan
Year and Date
2015-12-20
Related Report
Int'l Joint Research / Invited
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[Presentation] Inflationary cosmology in fluid description2015
Author(s)
Kazuharu Bamba
Organizer
The 25th Workshop on General Relativity and Gravitation in Japan
Place of Presentation
Panasonic Auditorium, Yukawa Hall, Yukawa Institute for Theoretical Physics, Kyoto University, Japan
Year and Date
2015-12-08
Related Report
Int'l Joint Research
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[Presentation] Ratchet baryogenesis during reheating2015
Author(s)
Kimiko YAMASHITA, Kazuharu BAMBA, Akio SUGAMOTO and Tatsu TAKEUCHI
Organizer
SUSY 2015, 23rd International Conference on Supersymmetry and Unification of Fundamental Interactions
Place of Presentation
Lake Tahoe, California, United States of America
Year and Date
2015-08-27
Related Report
Int'l Joint Research
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[Presentation] Cosmological Issues in F(T) Gravity Theory2015
Author(s)
Kazuharu Bamba
Organizer
International Conference on Relativistic Astrophysics, Celebrating 100 Years of General Relativity
Place of Presentation
Department of Mathematics, University of the Punjab, Lahore, Pakistan
Year and Date
2015-02-14
Related Report
Invited
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[Presentation] Inflationary models and the recent observations2014
Author(s)
Kazuharu Bamba
Organizer
2nd International Workshop on Particle Physics and Cosmology after Higgs and Planck
Place of Presentation
National Center for Theoretical Sciences, Hsinchu, and Fo-Guang-Shan, Kaohsiung, Taiwan
Year and Date
2014-10-11
Related Report
Invited
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[Presentation] Dark energy cosmology in F(T) gravity
Author(s)
Kazuharu Bamba
Organizer
KMI International Symposium 2013 on "Quest for the Origin of Particles and the Universe" (KMI 2013)
Place of Presentation
Sakata-Hirata Hall, Science South Building, Nagoya University, Nagoya, Japan
Related Report
Invited
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