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1996 Fiscal Year Final Research Report Summary

Theoretical Study of Particles and Fields

Research Project

Project/Area Number 06045009
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionUniversity-to-University Cooperative Research
Research InstitutionUniversity of Tokyo

Principal Investigator

FUJIKAWA Kazuo  Graduate School of Science, University of Tokyo, Professor, 大学院・理学系研究科, 教授 (30013436)

Co-Investigator(Kenkyū-buntansha) VERLINDE Erik  Theory Division, CERN,Professor, 理論部, 教授
ALVAREZーGAVM ゴーメ ルイス  欧州原子核研究機構, 理論部, 教授
VENEZIANO Ga  欧州原子核研究機構, 理論部, 主任教授
ELLIS John  Theory Division, CERN,Professor, 理論部, 教授
KATO Mitsuhiro  Graduate School of Arts and Sciences, Univ.of Tokyo, Associate Professor, 大学院・総合文化研究科, 助教授 (80185876)
TSUTSUI Izumi  Inst.of Nuclear Study, Univ.of Tokyo, Associate Professor, 原子核研究所, 助教授 (10262106)
OGAWA Kaku  Graduate School of Science, Univ.of Tokyo, Research associate, 大学院・理学系研究科, 助手 (90194430)
YANAGIDA Tsutomu  Graduate School of Science, Univ.of Tokyo, Professor, 大学院・理学系研究科, 教授 (10125677)
EGUCHI Tohru  Graduate School of Science, Univ.of Tokyo, Professor, 大学院・理学系研究科, 教授 (20151970)
ALVAREZ-GAUME Lovis  Theory Division, CERN,Professor
VEREZIANA Gabriel  Theory Division, CERN,Chairperson
Project Period (FY) 1994 – 1996
Keywordsstandard model / chiral symmetry / grand unification / supersymmetry / conformal symmetry / string theory / quantum gravity / proton decay
Research Abstract

The major purpose of this project is to understand the basic constituents of the Nature and their properties, together with the basic theoretical framework of particle physics.
For this purpose, Fujikawa together with Yamada studied the chiral structure of quarks, in particular, the top quark. On the basis of the experimental data from electron-positron annihilation, it has been shown that the chiral structure of the top quark holds quite accurately. Motivated by this analysis, Fujikawa also studied a model of quarks and leptons and their chiral structure.
T.Eguchi together with his collaborators clarified the basic issues related to the dynamics of supersymmetric gauge theories. The conformal properties of supersymmetric Yang-Mills thoeries with or without matters have been clearly analyzed. Also, some of field theoretical properties in 4 as well as 3 and 5 dimensional space-time have been clarified by incorporating the string theoretical view point. He also studied several fundamental issues related to string theory and quantum gravity.
T.Yanagida together with his collaborators studied various aspects of super-symmetric extension of the standard model. In particular, he made an analyis related to the issue of the hierarchy problem in the grand unification scheme. He put forward a possible scheme which may eventually solve why the physics at the present energies and the physics at the grand unification scale can be unified in a natural theoretical framework, without inducing large proton decay. He also analyzed the basic issue of supersymmetry breaking mechanism.
It should be emphasized that the visitors from CERN provided extremely stimulative information to our theory group.

  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] 藤川和男: "Test of the chiral structure of the top-bottom charged current by the process b→sr" Physical Review. D49. 5890-5893 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤川和男: "A vector-like extension of the standard model" Progress of Theoretical Physics. 92. 1149-1160 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤川和男: "Snalytic index and chiral fermions" Indian Journal of Physics. 70A. 275-291 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤川和男: "BRST symmetric formulation of a theory with Gribov-type copies" Nuclear Physics. B468. 355-379 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 江口 徹: "Toda latlice hierarchy and the topological description of the C=1 string theory" Physics Letters. B331. 330-334 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 江口 徹: "On the genus expansion of the topological string theory" Review of mathematical Physics. 3. 279-309 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 江口 徹: "Prepotentials in supersymmetric gauge theories and soliton equations" Modern Physics Letters. A11. 131-138 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 江口 徹: "Study of N=2 super conformal field theories in 4-dimensions" Nuclear Physics. B471. 430-442 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 江口 徹: "Gravitational quantum cohomology" To appear in Intermational Journal in modern physics A. (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 久野純治: "Limit on the color-triplet Higgs mass in the mininum supersymmetric SU(5) model" Modern Physics Letters. A10. 2267-2278 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 久野純治: "Lepton-flavor violation in the supersymmetric standard model with see-sow induced neutrino masses" Physics Letters. B357. 579-587 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 井沢健一: "Dynamical supersymmetry breaking in vector-like gauge theories" Progress of Theoretical Physics. 95. 829-830 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 堀田智洋: "Dynamical models for light Higgs dovblets in supersymmetric grand unified theories" Physical Review. D53. 3913-3919 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 堀田智洋: "Non-sbelian duality and Higgs multiplets in supersymmetric grand unified theories" Progress of Theoretical Physics. 95. 949-962 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Fujikawa: "Test of the chiral structure of the top-bottom charged current by the process b*S2" Physical Review. D49. 5890-5893 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Fujikawa: "A vector-like extension of the standard model" Progress of Theoretical Physics. 92. 1149-1160 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Fujikawa: "Analitic index and chiral fermions" Indian Journal of Physics. 70A. 275-291 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Fujikawa: "BRST symmetric formulation of a theory with Gribov-type copies" Nuclear Physics. B468. 355-379 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Eguchi: "Toda lattice hierarchy and the topological description of the c=1 string theory" Physics Letters. B331. 330-334 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Eguchi: "On the genus expansion of the topological string theory" Review of Mathematical Physics. 3. 279-309 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Eguchi: "Prepotentials in supersymmetric gauge theories and soliton equations" Modern Physics Letters. A11. 131-138 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Eguchi: "Study of N=2 super conformal field theories in 4-dimensions" Nuclear Physics. B471. 430-442 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Eguchi: "Gravitational quantum cohomology To appear in" International Journal in Modern Physics A. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J.Hisano: "Limit on the color-triplet Higgs mass in the minimum supersymmetric SU (5) model" Modern Physics Letters. A10. 2267-2278 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J.Hisano: "Lepton-flavor violation in the supersymmetric standard model with see saw induced neutrine masses" Physics Letters. B357. 579-587 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Izawa: "Dynamical supersymmeticy breaking in vecter-like gauge theories" Progress of Theoretical Physics. 95. 829-830 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Hotta: "Dynamical models for light Higgs doublets in supersymmetric grand unified theories" Physical Review. D53. 3913-3919 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Hotta: "Non-Abelian duality and Higgs multiplets in supersymmetric grand unifild theories" Progress of Theoretical Physics. 95. 949-962 (1996)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-09  

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