Study of symmetry and nonperturbative renormalization in lattice gauge theory

• Project/Area Number: 19540286
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Kyoto University
• Principal Investigator: ONOGI Tetsuya Kyoto University, 大学院・理学研究科, 教授 (70211802)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥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)
• Keywords: 格子ゲージ理論 / カイラル対称性 / HQET / 有効理論 / 非摂動繰りこみ / 非摂動繰り込み / 対称性

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.

Research Products

• [Journal Article] Determination of the chiral condensate from 2+1-flavor lattice QCD (2010)
  • Author(s): H. Fukaya, S. Aoki, S. Hashimoto, T. Kaneko, J. Noaki, T. Onogi, N. Yamada
  • Journal Title: Phys. Rev. Lett. 104 Pages: 122002-122002
• [Journal Article] A new cheme for the running coupling constant in gauge theories using Wilson loops (2009)
  • Author(s): E. Bilgici, A. Flachi, E. Itou, M. Kurachi, C.-J.D. Lin, H. Matsufuru, H. Ohki, T. Onogi, T. Yamazaki
  • Journal Title: Phys. Rev. 80 Pages: 34507-34507
• [Journal Article] New scheme for the running coupling constant in gauge theories using Wilson loops (2009)
  • Author(s): E.Bilgici, T.Onogi, 他7名
  • Journal Title: Physical Review D80
  • Peer Reviewed
• [Journal Article] Pion form factors from two-flavor lattice QCD with exact chiral symmetry (2009)
  • Author(s): S.Aoki, T.Kaneko, T.Onogi, 他8名
  • Journal Title: Physical Review 80
  • Peer Reviewed
• [Journal Article] Recent Progress in Lattice QCD (2009)
  • Author(s): T.Onogi
  • Journal Title: International Journal of Modern Physics A24 Pages: 4607-4622
  • Peer Reviewed
• [Journal Article] Non-perturbative renormalization of bilinear operators with dynamical overlap fermions (2009)
  • Author(s): J.Noaki, T.Onogi, 他2名
  • Journal Title: Physical Review D81
  • Peer Reviewed
• [Journal Article] Two-flavor simulation with exact chiral symmetry (2008)
  • Author(s): S. Aoki, H. Fukaya, S. Hashimoto, K-I. Ishikawa, K. Kanaya, T. Kaneko, H. Matsufuru, M. Okamoto, M. Okawa, T. Onogi, A Ukawa, N. Yamada, T. Yoshi (JLQCD Collaboration)
  • Journal Title: Phys. Rev. 78 Pages: 14508-14508
• [Journal Article] S-parameter and pseudo-Nambu-Goldstone boson mass from lattice QCD (2008)
  • Author(s): E. Shintani, S. Aoki, H. Fukaya, S. Hashimoto, T. Kaneko, H. Matsufuru, T. Onogi, N. Yamada (JLQCD Collaboration)
  • Journal Title: Phys. Rev. Lett. 101 Pages: 242001-242001
• [Journal Article] Nucleon sigma term and strange quark content from lattice QCD with exact chiral symmetry (2008)
  • Author(s): H. Ohki, H. Fukaya, S. Hashimoto, T. Kaneko, H. Matsufuru, J. Noaki, T. Onogi, E. Shintani, N. Yamada (JLQCD Collaboration)
  • Journal Title: Phys. Rev. 78 Pages: 54502-54502
• [Journal Article] Determination of B*Bpi coupling in unquenched QCD (2008)
  • Author(s): H. Ohki, H. Matsufuru, T. Onogi
  • Journal Title: Phys. Rev. 77 Pages: 94509-94509
• [Journal Article] Topological susceptibility in two-flavor QCD with exact chiral symmetry (2008)
  • Author(s): JLQCD, TWQCD Collaborations, S. Aoki, T.W. Chiu, H. Fukaya, S. Hashimoto, T.H. Hsieh, T. Kaneko, H. Matsufuru, J. Noaki, K. Ogawa, T. Onogi, N. Yamada
  • Journal Title: Phys. Lett. 665 Pages: 294-297
• [Journal Article] Nucleon sigma term and strange quark content from lattice with exact chiral symmetry (2008)
  • Author(s): H. Ohki, T. Onogi, 他7名
  • Journal Title: Physical Review D78 Pages: 54502-54502
  • Peer Reviewed
• [Journal Article] S-paraieter and pseudo-Nambu-Goldstone bosonmlass from lattice QCD (2008)
  • Author(s): E. Shintani, T. Onog, 他名
  • Journal Title: Phyiscal Review Letters 101 Pages: 242001-242001
  • Peer Reviewed
• [Journal Article] Topological susceptibility in two-flavor lattice QCD with exact chiral symmetry (2008)
  • Author(s): S. Aoki, T. Onog, 他名
  • Journal Title: Physics Letters B665 Pages: 294-297
  • Peer Reviewed
• [Journal Article] Finite volume QCD at fixed topological charge (2007)
  • Author(s): S. Aoki, H. Fukaya, S. Hashimoto, T. Onogi
  • Journal Title: Phys. Rev. 76 Pages: 54508-54508
• [Journal Article] Finite volume QCD at fixed topological charge (2007)
  • Author(s): S. Aoki, H. Fukaya, S. Hashimoto, T. Onogi
  • Journal Title: Physical Review D76 Pages: 54508-54508
  • Peer Reviewed
• [Presentation] Results from lattice Q"CD with exact chiral symmetry (2010)
  • Author(s): T. Onogi
  • Organizer: invited talk at Komaba 2010 Recent Developments in Strings and Fields
  • Place of Presentation: at Univ. Tokyo, Komaba
  • Year and Date: 2010-02-13
• [Presentation] Results from lattice QCD with exact chiral symmetry (2010)
  • Author(s): T.Onogi
  • Organizer: Komaba 2010, Recent Developments in Strings and Fields
  • Place of Presentation: University of Tokyo, Komaba
  • Year and Date: 2010-02-13