1990 Fiscal Year Annual Research Report

場の量子論における動的対称性の破れ

Research Project

Project/Area Number	02044104
Research Institution	Hiroshima University
Principal Investigator	牟田泰三広島大学, 理学部, 教授 (80025353)
Co-Investigator(Kenkyū-buntansha)	大野木哲也広島大学, 理学部, 助手 (70211802) 青木健一京都大学, 基礎物理学研究所, 助手 (00150912) 小平治郎広島大学, 理学部, 助手 (40127080) 山脇幸一名古屋大学, 理学部, 助手 (90135301) HILL C.T. Fermi国立加速器研究所, 理論部, 助教授喜久川政吉広島大学, 理学部, 助教授 (30033830) LOVE S.T. Purdue大学, 理学部, 教授福田禮次郎慶応義塾大学, 理工学部, 教授 (10027352) BARDEEN W.A. Fermi国立加速器研究所, 理論部, 教授
Keywords	自発的対称性の破れ / 電弱理論 / クォ-ク / レプトン / ヒッグス機構 / 繰り込み群 / トップクォ-ク / 複合模型
Research Abstract	素粒子の振舞いは標準模型と呼ばれるゲ-ジ場の理論で記述される。標準模型の中でもとりわけヒッグス機構の起源は未解決のままであり、これを探ることはより深い基本的理論への手がかりをつかむ上で重要である。本研究計画では、標準理論の中の電弱理論の対称性の破れを引き起こしているヒッグス機構を、動的観点から解明することを目標としている。この大方針の下に、Bardeenらは、山脇・Miransky・棚橋及び南部によって提唱されたトップクォ-ク凝縮模型を詳細に調べ、トップクォ-ク及びヒッグス粒子の質量に対する信頼できる予言値を求めた。この予言値は、最近の精密な実験デ-タの解析から得られているトップクォ-ク質量に対する許される領域からはずれており、本模型か実験解析かのどちらかに重大な問題があることを示唆している。その後の更に詳しい分析や改良によってもほとんど結論は変わっておらず、大きな論争の的となっている。一方、我々は広島において、主として凝縮する粒子はトップクォ-クでなくてSU(3)カラ-の高次元表現に属するクォ-クであるという模型を提唱し、理論的分析を行った。その結果、この新しいクォ-クの質量は約350Gevとなり、将来実験で見いだされ得るものであると考えられる。他方、この模型では、トップクォ-クの質量は150GeV程度となり、現在の実験デ-タと矛盾しない。 Bardeenらと我々は、これらの結果を踏まえて、それぞれの模型の問題点を検討しながら、それぞれの長所を生かした更に現実味のある模型を探りつつある。このための研究連絡として、Bardeen,Love,Parkeが広島を訪れ、牟田、小平、大野木及び大学院生がフェルミ国立加速器研究所を訪れた。

Research Products
(29 results)

All Other

All Publications (29 results)

[Publications] T.Muta: "Gauge dependence of the effective potential for bilocal composite fields in Abelian gauge theories" Physical Review D. 41. 1296 (1990)
[Publications] T.Muta: "Observable consequences of the strong coupling phase of QED hypothesized near the surface of largeーZ nuclei" Modern Physics Letters A. 5. 309 (1990)
[Publications] T.Muta: "Dynamical electroweak symmetry breaking with colorーsextet quarks" Progress of Theoretical Physics. 85. 111-130 (1991)
[Publications] K.Kikukawa: "Ultraviolet Fixed Structure of Renormalizable FourーFermion Theory in Less than Four Dimensions." Physics Letters B. 234. 497-502 (1990)
[Publications] J.Kodaira: "Conservation Laws away from Criticality beyond the Lowest Order" Progress of Theoretical Physics. 83. 326-342 (1990)
[Publications] K.ーI.Aoki: "Calculating the Decay Constant F_π" Progress of Theoretical Physics. 84. 683-701 (1990)
[Publications] T.Oonogi: "Random SurFACE IN D〉1 Dimensional Space" 素粒子論研究. 81. F71-F78 (1990)
[Publications] T.Oonogi: "Phase Transitions in MambuーGoto String Model with Extrinsic Curvature" Physics Letters B. (1991)
[Publications] M.Komachiya: "Onーshell expansion of the effective action II Coherent state and S matrix" Physical Review D. 42. 2792-2805 (1990)
[Publications] M.Sumino: "Classical Limit of the Generating Functional for the NonーEquilibrium statistical Mechanics" Journal of the physical society of Japan. 59. 3553-3562 (1990)
[Publications] R.Fukuda: "Scale Invariant Formula for the Non Perturbative Quantity in Quantum Chromodynamics" Physics Letters B.
[Publications] W.A Bardeen: "MINMAL DYNAMICAL SYMMETRY BREAKING OF THE STANDARD MODEL" Phys.Rev.D. 41. 1647-1660 (1990)
[Publications] W.A.Bardeen: "ELECTROWEAK SYMMETRY BREAKING:TOP QUARK CONDENSATES" FERMILABーCONFー90/269ーT. (1990)
[Publications] W.A.Bardeen: "ON THE SCALING PROPERTIES OF QUENCHED QED" Phys.Rev.D. 42. 3514-3519 (1990)
[Publications] W.A.Bardeen: "FATE OF SCALE SYMMETRY IN SCALE INVARIANT QUANTUM ELECTRODYNAMICS" FermilabーPUBー90/123ーT. (1990)
[Publications] M.Carena: "DYNAMICAL SYMMETRY BREAKING AND THE TOP QUARK MASS IN THE MINIMAL SUPERSYMMETRIC STANDARD MODEL" FermilabーPUBー90/?ーt.
[Publications] W.A.Bardeen: "The Top Quark Mass in a Supersymmetric Standard Model With Dynamical Symmetry Breaking" Phys.Lett.B. 237. 235-241 (1990)
[Publications] S.T.Love: "Dynamical Structure of Quenched QED" to appear in Proceedings of the International Workshop on Strong Coupling Gauge Theories and Beyond,Nagoya,Japan(Word Scientific,Singapore). (1991)
[Publications] S.T.Love: "Scaling Dynamics of Quenched QED" to appear Proceedings of the XXV International Conference on High Energy Physics,Singapore 1990. (1991)
[Publications] J.Frieman: "Natural Models of a Late Time Phase Transition" to be published.
[Publications] T.Hill: "Calculable Norminimal Coupling of Composite Scalar Bosons to Gravity" FERMIーPubー91/31ーT. (1991)
[Publications] T.Hill: "The View From the Top Quark" Fermilab Reports. (1991)
[Publications] T.Hill: "Electroweak Symmetry Breaking by Fourth Generation Condensates and the Neutrino Spectrum" Phys.Rev.D.
[Publications] T.Hill: "Can Oscillating Physics Explain an Apparently Periodic Uniヒerse?" Phys.Lett.B. 252. 343 (1990)
[Publications] T.Hill: "Oscillating Scalar Fields and Hubble Constants" FERMILABーPUBー90/103ーT. (1990)
[Publications] T.Hill: "Minimal Dynamical Symmetry Breaking of the Electroweak Interactions and m_<top>" Modern Phys,Lett.A. 5. 32 (1990)
[Publications] T.Hill: "A Naturally Heavy Fourth Generation Neutrino" Phys.Lett.B. 241. 96 (1990)
[Publications] W.A.Bardeen: "Minimal Dynamical Symmetry Breaking of the Standard Model" Phys.Rev.D. 41. 1647 (1990)
[Publications] 福田礼次郎: "マクロ系の量子力学" 丸善株式会社,

1990 Fiscal Year Annual Research Report

場の量子論における動的対称性の破れ

Principal Investigator

牟田 泰三 広島大学, 理学部, 教授 (80025353)

Research Products

[Publications] T.Muta: "Gauge dependence of the effective potential for bilocal composite fields in Abelian gauge theories" Physical Review D. 41. 1296 (1990)

[Publications] T.Muta: "Observable consequences of the strong coupling phase of QED hypothesized near the surface of largeーZ nuclei" Modern Physics Letters A. 5. 309 (1990)

[Publications] T.Muta: "Dynamical electroweak symmetry breaking with colorーsextet quarks" Progress of Theoretical Physics. 85. 111-130 (1991)

[Publications] K.Kikukawa: "Ultraviolet Fixed Structure of Renormalizable FourーFermion Theory in Less than Four Dimensions." Physics Letters B. 234. 497-502 (1990)

[Publications] J.Kodaira: "Conservation Laws away from Criticality beyond the Lowest Order" Progress of Theoretical Physics. 83. 326-342 (1990)

[Publications] K.ーI.Aoki: "Calculating the Decay Constant F_π" Progress of Theoretical Physics. 84. 683-701 (1990)

[Publications] T.Oonogi: "Random SurFACE IN D〉1 Dimensional Space" 素粒子論研究. 81. F71-F78 (1990)

[Publications] T.Oonogi: "Phase Transitions in MambuーGoto String Model with Extrinsic Curvature" Physics Letters B. (1991)

[Publications] M.Komachiya: "Onーshell expansion of the effective action II Coherent state and S matrix" Physical Review D. 42. 2792-2805 (1990)

[Publications] M.Sumino: "Classical Limit of the Generating Functional for the NonーEquilibrium statistical Mechanics" Journal of the physical society of Japan. 59. 3553-3562 (1990)

[Publications] R.Fukuda: "Scale Invariant Formula for the Non Perturbative Quantity in Quantum Chromodynamics" Physics Letters B.

[Publications] W.A Bardeen: "MINMAL DYNAMICAL SYMMETRY BREAKING OF THE STANDARD MODEL" Phys.Rev.D. 41. 1647-1660 (1990)

[Publications] W.A.Bardeen: "ELECTROWEAK SYMMETRY BREAKING:TOP QUARK CONDENSATES" FERMILABーCONFー90/269ーT. (1990)

[Publications] W.A.Bardeen: "ON THE SCALING PROPERTIES OF QUENCHED QED" Phys.Rev.D. 42. 3514-3519 (1990)

[Publications] W.A.Bardeen: "FATE OF SCALE SYMMETRY IN SCALE INVARIANT QUANTUM ELECTRODYNAMICS" FermilabーPUBー90/123ーT. (1990)

[Publications] M.Carena: "DYNAMICAL SYMMETRY BREAKING AND THE TOP QUARK MASS IN THE MINIMAL SUPERSYMMETRIC STANDARD MODEL" FermilabーPUBー90/?ーt.

[Publications] W.A.Bardeen: "The Top Quark Mass in a Supersymmetric Standard Model With Dynamical Symmetry Breaking" Phys.Lett.B. 237. 235-241 (1990)

[Publications] S.T.Love: "Dynamical Structure of Quenched QED" to appear in Proceedings of the International Workshop on Strong Coupling Gauge Theories and Beyond,Nagoya,Japan(Word Scientific,Singapore). (1991)

[Publications] S.T.Love: "Scaling Dynamics of Quenched QED" to appear Proceedings of the XXV International Conference on High Energy Physics,Singapore 1990. (1991)

[Publications] J.Frieman: "Natural Models of a Late Time Phase Transition" to be published.

[Publications] T.Hill: "Calculable Norminimal Coupling of Composite Scalar Bosons to Gravity" FERMIーPubー91/31ーT. (1991)

[Publications] T.Hill: "The View From the Top Quark" Fermilab Reports. (1991)

[Publications] T.Hill: "Electroweak Symmetry Breaking by Fourth Generation Condensates and the Neutrino Spectrum" Phys.Rev.D.

[Publications] T.Hill: "Can Oscillating Physics Explain an Apparently Periodic Uniヒerse?" Phys.Lett.B. 252. 343 (1990)

[Publications] T.Hill: "Oscillating Scalar Fields and Hubble Constants" FERMILABーPUBー90/103ーT. (1990)

[Publications] T.Hill: "Minimal Dynamical Symmetry Breaking of the Electroweak Interactions and m_<top>" Modern Phys,Lett.A. 5. 32 (1990)

[Publications] T.Hill: "A Naturally Heavy Fourth Generation Neutrino" Phys.Lett.B. 241. 96 (1990)

[Publications] W.A.Bardeen: "Minimal Dynamical Symmetry Breaking of the Standard Model" Phys.Rev.D. 41. 1647 (1990)

[Publications] 福田 礼次郎: "マクロ系の量子力学" 丸善株式会社,

牟田泰三広島大学, 理学部, 教授 (80025353)

[Publications] 福田礼次郎: "マクロ系の量子力学" 丸善株式会社,