Researches on extra-dimensional models based on higher-dimensional supergravities

2017 Fiscal Year Final Research Report

• Project/Area Number: 25400283
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: Sakamura Yutaka 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, 研究機関講師 (90525552)
• Project Period (FY): 2013-04-01 – 2018-03-31
• Keywords: 余剰次元 / 超対称性 / 高次元理論 / 超重力理論

Outline of Final Research Achievements

I have done mainly researches on five- and six-dimensional supergravities, aiming to the construction of extra-dimensional models based on higher-dimensional supergravities.
On five dimensional theories, we proposed a novel scenario in which a large extra dimension whose size is much larger than the Planck length is naturally realized due to the quantum effect.
On six-dimensional case, we made an attempt to develop a systematic method of deriving four-dimensional effective theories from six-dimensional supergravity with various compactifications. As a first step for our purpose, we made a success of completing the N=1 superfield description of six-dimensional supergravity action. This result can be applied to any compactifications that preserve N=1 supersymmetry, and thus it is quite useful to analyze various extra-dimensional models.

Free Research Field

素粒子論