Research on quantum simulations out of equlibrium

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H03652
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: The University of Tokyo
• Principal Investigator: Fukushima Kenji 東京大学, 大学院理学系研究科(理学部), 教授 (60456754)
• Co-Investigator(Kenkyū-buntansha): 日高 義将 国立研究開発法人理化学研究所, 仁科加速器研究センター, 研究員 (00425604) ; 松枝 宏明 仙台高等専門学校, 総合工学科, 教授 (20396518) ; 佐々木 勝一 東北大学, 理学研究科, 准教授 (60332590) ; 岡 隆史 東京大学, 大学院工学系研究科(工学部), 講師 (50421847)
• Research Collaborator: BENIC Sanjin ; PU Shi ; MURASE Koichi ; OKA Takashi
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 実時間発展 / 符号問題 / 粒子生成 / ボルツマン方程式 / 輸送係数

Outline of Final Research Achievements

The problem of real-time evolution with quantum fluctuations has universal relevance for establishing descriptions for realistic physics phenomena. This is a very important problem, and nevertheless, no general and nonperturbative algorithm at work is known, especially for relativistic quantum field theory. For the purpose to attack this problem, we investigated the sign problem, fixed point structures of the Boltzmann equation, particle production calculations, transport coefficient estimations including resummed diagrams. In this way we took the approaches from various perspectives, to find concrete answers for respective problems.

Free Research Field

原子核理論