Non-perturbative approach to research on quark gluon matter

2014 Fiscal Year Final Research Report

• Project/Area Number: 24740169
• 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 (2013-2014); Keio University (2012)
• Principal Investigator: FUKUSHIMA Kenji 東京大学, 理学(系)研究科(研究院), 准教授 (60456754)
• Research Collaborator: PAWLOWSKI Jan M.
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 強い相互作用 / 強電磁場効果 / 曲がった時空 / 実時間シミュレーション / カイラル対称性の破れ / 非摂動的計算 / ダイクォーク相関 / トポロジー的ゲージ配位

Outline of Final Research Achievements

Properties of quark-gluon matter under extreme environments have been studied, especially when magnetic fields and gravity effects are strong. Then, new mechanisms for chiral symmetry breaking have been found. In a strong magnetic field a possibility of neutral scalar mesons coupling to the magnetic field through quark polarization has been pointed out, and a significant enhancement of scalar fluctuations induced by the magnetic field has been demonstrated. In a strongly curved space, it has been found that the curvature gives a fermion mass gap in a way not to break chiral symmetry, which has been named the chiral gap effect. Also, by using the real-time simulation, the particle production problem under a strong electric field has been analyzed, and a new method has been proposed based on the stochastic quantization.

Free Research Field

クォークハドロン物理学