Exploring the early Universe with cosmological observations and particle physics

2014 Fiscal Year Final Research Report

• Project/Area Number: 23740195
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Saga University
• Principal Investigator: TAKAHASHI Tomo 佐賀大学, 工学(系)研究科(研究院), 准教授 (60432960)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: 密度揺らぎ / 初期宇宙 / インフレーション

Outline of Final Research Achievements

Recent cosmological observations such as Planck satellite have revealed various aspects of the Universe. In this research project, focusing on primordial density fluctuations, we have studied its generation mechanism and the evolution of the early Universe. By using the data from current cosmological observations such as WMAP and Planck, we have investigated various generation mechanisms of primordial fluctuations and the thermal history of the Universe. By taking account of models of particle physics, we have discussed possible scenarios of the evolution of the early Universe. The prospects of future observations of how such scenarios can be probed have also been discussed.

Free Research Field

宇宙論