| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Research Abstract |
Symmetries and nonperturbative renormalization are extremely useful concept in field theory. Using the nonperturbative lattice QCD simulations based on chiral symmetry, heavy quark symmetry and nonperturbative renormalization, I studied various phenomena or physical quantities which are important for field theory and particle physics phenomenology. First, we carried out the first large scale QCD simulations using a fermion formalism with exact chiral symmetry (the Overlap fermion) and determined the chiral condenstate, decay constant and the sigma term. Exploiting HQET, which is an effective theory of the heavy quark, we computed the pionic coupling of the B meson. We also proposed a new scheme for the nonperturbative gauge coupling and determined the nonperturbative running coupling.
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