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Structures and Interactions of Elementary Particles

Research Project

Project/Area Number 02045009
Research Category

Grant-in-Aid for international Scientific Research

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

Principal Investigator

IGI Keiji  University of Tokyo, Faculty of Science, Professor, 理学部, 教授 (20011497)

Co-Investigator(Kenkyū-buntansha) ZWIRNER Fabio  CERN, Theory Division, Professor, 理論部, 教授
ALVAREZ-GAUME Louis  CERN, Theory Division, Professor, 理論部, 教授
VENEZIANO gabriel  CERN, Theory Division, Professor, 理論部, 教授
ELLIS John  CERN, Theory Division, Professor, 理論部, 主任教授
KATO Akishi  University of Tokyo, Faculty of Science, Research Associate, 理学部, 助手 (10211848)
OGAWA Kaku  University of Tokyo, Faculty of Science, Research Associate, 理学部, 助手 (90194430)
KAWAI Hikaru  University of Tokyo, Faculty of Science, Associate Professor, 理学部, 助教授 (80211176)
KAZAMA Yoichi  University of Tokyo, College of Arts and Sciences, Associate Professor, 教養学部, 助教授 (60144317)
EGUCHI Tohru  University of Tokyo, Faculty of Science, Professor, 理学部, 教授 (20151970)
NARAIN Kumar  欧州原子核研究機構, 理論部, 研究員
SCHELLEKENS バート  欧州原子核研究機構, 理論部, 研究員
ALTARELLI Gu  欧州原子核研究機構, 理論部, 教授
MARTIN Andre  欧州原子核研究機構, 理論部, 教授
JACOB Mauric  欧州原子核研究機構, 理論部, 教授
ALVAREZ Gaum  欧州原子核研究機構, 理論部, 教授
北沢 良久  東京大学, 理学部, 助手 (10195258)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 1991: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1990: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsHiggs Particle / Standard Model / Spontaneous Symmetry breaking / Supersymmetry / Black Hole / Topological Field Theory / Superconformal Algebra / Two-Dimensional Gravity / 対称性の自発的破れ / 低エネルギ-定理 / 超共形不変 / フュ-ジョン則 / matrix model
Research Abstract

1. Igi and Hikasa (KEK) determined the partial-wave amplitudes of W_LW_L scattering process by imposing two general properties - Higgs dominance and low energy theorem based on broken chiral symmetry. They found that their prediction coincide with the standard model calculation when the Higgs self-coupling lambda is small, whereas the discrepancy becomes large when lambda becomes large.
2. Zwirner et al calculated the one-loop radioative corrections to the mass of the neutral Higgs boson in the minimal supersymmetric extension of the standard model. They delineate the domains of parameter space accessible at LEP I and at LEP II.
3. Recently Witten showed that the two-dimensional black-hole can be consistently described by a solvable conformal field theory-gauged Wess-Zumino-Witten (WZW) model. In the vicinity of singular points, this model approaches the topological field theory which describe flat U(1)gauge fields. Eguchi studied this phenomenon by "twisting" the supersymmetric extensio … More n of the WZW model. He showed that space-time singularity is nothing but the fixed point of BRS symmetry, and is naturally described by topological theories.
4. Conventionally topological conformal field theories are obtained from N=2 superconformal models, notably the Kazama-Suzuki models, by a procedure called "twisting" developed by Eguchi and Yang. Recently, however, by studying the general structure of topological conformal algebra (TCA), Kazama discovered a new type of TCA and thereby, widened the scope of topological conformal theories. He also showed that this novel algebra arises from a system possessing a hidden N=1 superconformal symmetry by "twisting"
5. Kawai et al studied the Schwinger-Dyson equation of generating function in the theory of random surfaces, which describes two-dimensional gravity in the continuum limit. They found a hidden W_* symmetry in two-dimensional quantum gravity or string theory, and showed the equivalence of the Schwinger-Dyson equation and the formal Virasoro vacuum conditions. Less

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (47 results)

All Other

All Publications (47 results)

  • [Publications] K.Hikasa: "Strongly Interacting WW Sector with a Scalar Resonance" Phys.Lett.B261. 285-288 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K.Igi: "Strongly Interacting Higgs Sector" Proceedings of the XXVI th Rencontre de Moriond. 155-160 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K.Igi: "Strongly Interacting Higgs Sector with a Scalar Resonance" Proceeding of the Electroweak Symmetry Breaking.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.Eguchi: "Hidden Fermionic Symmetry in Conformal Topological Field Theories" Communications in Mathematical Physics. 140. 159-168 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.Eguchi: "Topological Field Theories and the Space-Time Singularity" Modern Physics Letters. A7. 85-91 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y.Kazama: "Novel Topological Conformal Algebras" Modern Physics Letters. A6. 1321-1332 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Fukuma: "Continuum Schwinger-Dyson Equations and Universal Structures in Two-Dimensional Quantum Gravity" International Journal of Modern Physics A. 6. 1385-1406 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Fukuma: "Infinite Dimensional Grassmannian Structure of Two-Dimensional Quantum Gravity" Comm.Math.Physics. 143. 371-403 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Fukuma: "Eplicit Solution for p-q Duality in Two-Dimensional Quantum Gravity" Comm.Math.Physics.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Kawai: "Quantum Gravity and Random Surfaces" Nucl.Phys.B.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Ferrara: "Duality Invariant Partition Functions and Automorphic Superpotentials for (2,2) String Compactifications" Nuclear Physics. B365. 431-466 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] J.Ellis: "On radiative corrections to supersymmetric Higgs boson masses and their implications for LEP Searches" Physics Letters. B262. 477-484 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] I.Antoniadis: "String threshold corrections and flipped SU(5)" Physics Letters. B268. 188-196 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K. Hikasa: "Strongly Interacting WW Sector with a Scalar Resonance" Phys. Lett.B261. 285-288 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K. Igi: "Strongly Interacting Higgs Sector" Proceedings of the XXVI th Rencontre de Moriond. 155-160 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K. Igi: "Strongly Interacting Higgs Sector with a Scalar Resonance" Proceedings of the Electroweak Symmetry Breaking.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Eguchi: "Hidden Fermionic Symmetry in Conformal Topological Field Theories" Communications in Mathematical Physics. 140. 159-168 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Eguchi: "Topological Field Theories and the Space-Time Singularity" Modern Physics Letters. A7. 85-91 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. Kazama: "Novel Topological conformal Algebras" Modern Physics Letters. A6. 1321-1332 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Fukuma: "Continuum Schwinger-Dyson Equations and University Structures in Two-Dimensional Quantum Gravity" International Journal of Modern Physics A. 6. 1385-1406 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Fukuma: "Infinite Dimensional Grassmannian Structure of Two-Dimensional Quantum Gravity" Comm. Math. Physics. 143. 371-403 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Fukuma: "Eplicit Solution for p-q Duality in Two-Dimensional Quantum Gravity" Comm. Math. Physics.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Kawai: "Quantum Gravity and Random Surfaces" Nucl. Phys. B.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Ferrara: "Duality Invariant Partition Functions and Automorphic Superpotentials for (2, 2) String Compactifications" Nuclear Physics. B365. 431-466 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] J. Ellis: "On radioative corrections to supersymmetric Higgs boson masses and their implications for LEP Searches" Physics Letters. B262. 477-484 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] I. Antoniadis: "String threshold corrections and flipped SU(5)" Physics Letters. B268. 188-196 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K.Hikasa: "Strongly Interacting WW,Sector with a Scalar Resonance" Phys.Lett.B261. 285-288 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] K.Igi: "Strongly Interacting Higgs Sector" Proceedings of the XXVI th Rencontre de Moriond. 155-160 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] K.Igi: "Strongly Interacting Higgs Sector with a Scalar Resonance" Proceeding of the Electroweak Symmetry Breaking.

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Eguchi: "Hidden Fermionic Symmetry in Conformal Topological Field Theories" Communications in Mathematical Physics. 140. 159-168 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Eguchi: "Topological Field Theories and the Space-Time Singularity" Modern Physics Letters. A7. 85-91 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Y.Kazama: "Novel Topological Conformal Algebras" Modern Physics Letters. A6. 1321-1332 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Fukuma: "Continuum Schwinger-Dyson Eguations and Universal Structures in Two-Dimensional Quantum Gravity" International Journal of Modern Physics A. 6. 1385-1406 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Fukuma: "Infinite Dimensional Grassmannian Structure of Two-Dimensional Quantum Gravity" Comm.Math.Physics. 143. 371-403 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Fukuma: "Eplicit Solution for p-q Duality in Two-Dimensional Quantum Gravity" Comm.Math.Physics.

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Kawai: "Quantum Gravity and Random Surfaces" Nucl.Phys.B.

    • Related Report
      1991 Annual Research Report
  • [Publications] S.Ferrara: "Duality Invariant Partition Functions and Automorphic Superpotentials for (2,2) String Compactifications" Nuclear Physics. B365. 431-466 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] J.Ellis: "On radiative corrections to supersymmetric Higgs boson masses and their implications for LEP Searches" Physics Letters. B262. 477-484 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] I.Antoniadis: "String threshold corrections and flipped SU(5)" Physics Letters. B268. 188-196 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] K.Hikasa and K.Igi: "Strongly Interacting WW Sector with a Scalar Resonance" Phys.Lett.B Preprint,UTー576,KEKーTHー278.

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Eguchi and S.ーK.Yang: "N=2 Superconformal Models as Topological Field Theories" Mod.Phys.Lett.A. 5. 1693-1715 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] K.Ito and Y.Kazama: "FeiginーFuchs Reoresentation of A^<(1)>_n Affine Lie Algebra and the Associated Parafermionic Algebra" Mod.Phys.Lett.A. 5. 215-224 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Y.Kazama: "Novel Topological Conformal Algebras" Preprint UTーKomaba 90ー30(1991)Submitted to Int.J.Mod.Phys.A.

    • Related Report
      1990 Annual Research Report
  • [Publications] M.Fukuma,H,Kawai and R.Nakayama: "Continuum SchwingerーDyson Equations and Universal Structures in TwoーDimensional Quantum Gravity" Int.J.of Mod.Phys.A.

    • Related Report
      1990 Annual Research Report
  • [Publications] John Ellis,Jorge L.Lopez,D.V.Nanopoulos: "Constraints on Grand Unified Superstring Theories" Phys.Lett.B. 245. 375-383 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] S.Ferrara,N.Magnoli T.R.Taylor,G.Veneziano: "Duality and Supersymmetry Breaking in String Theory" Phys.Lett.B. 245. 409-416 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] L.AlvarezーGaume,C.Gomez,J.Lacki: "Integrability in Random Matrix Models" CERN Preprint CERNーTHー5875ー90(1990).

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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