Studying inflation models and reheating in the PLANCK era

2017 Fiscal Year Final Research Report

• Project/Area Number: 26800121
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: The University of Tokyo
• Principal Investigator: Nakayama Kazunori 東京大学, 大学院理学系研究科(理学部), 助教 (90596652)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: インフレーション / 初期宇宙 / 再加熱 / ヒッグス / 超対称性 / アクシオン

Outline of Final Research Achievements

There are increasing observational evidence of the existence of accelerated expansion era in the very early Universe, called inflation. On the other hand, the physics of ``reheating'' after inflation has been unclear both theoretically and observationally. I studied the physics of reheating in detail, and found rich phenomena which had not been known so far, for example, the decay of Higgs vacuum during reheating, violent particle production phenomena, reheating through gravitational effects. All these results are important as new probes of inflationary Universe.

Free Research Field

素粒子論的宇宙論