Studies on the appearance of the standard model from the matrix model describing superstrings

2017 Fiscal Year Final Research Report

• Project/Area Number: 24540279
• 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: Saga University
• Principal Investigator: AOKI Hajime 佐賀大学, 工学(系)研究科(研究院), 教授 (80325589)
• Project Period (FY): 2012-04-01 – 2018-03-31
• Keywords: 超弦理論 / 行列模型 / 標準模型 / 自然さ問題・階層性問題

Outline of Final Research Achievements

We studied how the standard model of particle physics appears from the matrix model as a nonperturbative formulation of superstrings. We constructed matrix configurations that correspond to the intersecting D-branes and the magnetized D-branes in string theories, and showed that matter content of the standard model can be realized in the matrix model. Moreover, using the advantage of the matrix model with a definite measure as well as action, we estimated probabilities of the appearance of the standard model and its extensions in the string theory.
We also reconsidered the naturalness problem, or the hierarchy problem, which is important for connecting the standard model with the matrix model, and showed a possibility that the dark energy is given by quantum fluctuations of fields.

Free Research Field

素粒子物理学