Studies of the cosmic acceleration mechanism and the origins of the three components in the present universe in extended gravity theories

2017 Fiscal Year Final Research Report

• Project/Area Number: 25800136
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Fukushima University (2015-2017); Ochanomizu University (2013-2014)
• Principal Investigator: BAMBA Kazuharu 福島大学, 共生システム理工学類, 准教授 (60608719)
• Project Period (FY): 2013-04-01 – 2018-03-31
• 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

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.

Free Research Field

宇宙論・重力理論