Study of chiral dynamics of lattice fermions with exact chiral symmetry

2016 Fiscal Year Final Research Report

• Project/Area Number: 25400284
• 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: Matsufuru Hideo 大学共同利用機関法人高エネルギー加速器研究機構, 計算科学センター, 助教 (10373185)
• Research Collaborator: YAMADA Norikazu 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
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 格子ゲージ理論 / シミュレーション物理 / 素粒子物理

Outline of Final Research Achievements

The spontaneous breaking of chiral symmetry is an important feature of QCD that describes interaction among quarks. This study focus on the chiral dynamics of gauge theories with changing the gauge group (SU(3) corresponds to QCD), fermion representation, and number of flavors. Performing numerical simulations with dynamical fermions that hold good chiral symmetry on the lattice, we have investigated the dynamics of the system through observables such as the meson correlation functions and the eigenmodes of the fermion matrix, mainly for SU(2) gauge theory. We have determined the phase structure against the number of flavors for the fermions in the fundamental representation. For the adjoint fermions, phase structure specific to a lattice theory has been investigated.

Free Research Field

素粒子論、計算物理