1995 Fiscal Year Annual Research Report

対称性の力学的破れと統一理論

Research Project

Project/Area Number	07304029
Research Category	Grant-in-Aid for Co-operative Research (A)
Research Institution	Kyoto University
Principal Investigator	九後太一京都大学, 大学院・理学研究科, 教授 (00115833)
Co-Investigator(Kenkyū-buntansha)	栗本猛富山大学, 理学部, 助教授 (10195563) 青木健一金沢大学, 理学部, 助教授 (00150912) 鈴木博茨城大学, 理学部, 助手 (90250977) 金杉弘隆東京工業大学, 理学部, 助手 (30016076) 石川健三北海道大学, 大学院・理学研究科, 教授 (90159690)
Keywords	対称性の力学的破れ / カイラル対称性 / QCD / くりこみ群方程式 / 超対称標準模型 / CP対称性 / Extended Technicolor
Research Abstract	今年度の本研究班の研究実績は、11.研究発表の項に見るように多岐にわたっている。ここでは、研究実施計画の項目に沿ってそのうち主なものについて述べる。 1.対称性のダイナミカルな破れの計算技術開発・カイラル対称性のダイナミカルな自発的破れの分野では、次のような仕事がなされた。東島は、改善された梯子近似でQCDのカイラル対称性の動的破れを調べた。山脇は、Thirring模型をhidden gauge対称性を持ったゲージ理論として議論した。近藤は、Thirring模型のボゾン化を論じた。九後はGauge-Higgs-Yukawa系のNontrivialityとgauged NJL模型のくりこみ可能性を明らかにした。青木健一は、Wegner-Houghtonくりこみ群方程式に対するlocal potential近似が有効であることを確かめた。青木慎也は、Wilson actionのquarkを持った格子QCDの相構造、およびKogut-Susskind quarkの場合のcharmoniumのスペクトルを調べた。牟田は、有限温度やdeSitter時空での4-fermion NJL模型に対して相構造を調べた。力学的破れに基づく統一理論や、現在の標準模型・超対称標準模型、あるいはそれを越える模型の分野でも様々な仕事がなされた。前川は、Vector-likeフェルミオンの凝縮で電弱対称性が破れる模型を提唱し、SおよびTパラメータが小さくなり得る事を示した。菅本は、初期宇宙におけるCP violationおよびBaryon asymmetryの生成を論じた。舟久保らはElectroweak bubble wallでのCP violationの状況を調べた。赤間は、quark-leptonのsubstructureが電弱oblique補正にどう効くかを調べた。石田は、共変なハドロンspring模型で、軽いquarkから重いquarkを含むものまで統一的にweak transitionを計算した。日笠は、超対称標準模型で、次元の無い結合定数に対する超対称関係式が、soft breaking項の影響でどのくらい幅射補正を受けるかを計算した。栗本は、W_Rが存在した場合、CP角の決定にどのように効くかを調べた。北沢は、Zbb vertexに対するExtended Technicolorの効果を論じた。

Research Products
(18 results)

All Other

All Publications (18 results)

[Publications] T. Kugo: "Nontriviality of Gaube-Higgs-Yukawa System and Renormalizability of Gauged Nambu-Jona-Lasinio Model" Prog. Theor. Phys. Supplement. 123 (to appear). (1996)
[Publications] K. Ishikawa et al.: "On the absence of finite size corrections in the quantized Hall couductance" Physics Letters. A210. 321-327 (1996)
[Publications] K. Akama: "Compositeness Condition at the next-to-leading order in the Nambu-Jona-Lasinio Model" Physical Review Letters. 76. 184-187 (1996)
[Publications] Y. Katsuki: "Majorana neutrino versus Dirac neutrino in e^+e^- w^+w^- through radiative correction" Physics Letters. B354. 363-370 (1995)
[Publications] H. Kanasugi et al.: "Systematic Treatment of General Time-Dependent Harmonic Oscillator in Classical and Quantum Mechanics" Prog. Theor. et al.93. 949-960 (1995)
[Publications] K. Funakubo Phys.: "CP-Violating Profile of the Electroweak Bubble Wall" Prog. Theor. Phys.94. 845-859 (1995)
[Publications] K. -I. Kondo: "Thirring Model as a Gauge Theory" Nucl. Phys. B. 450. 251-266 (1995)
[Publications] K. Higashijima: "Chiral Symmetry Breaking in Improved Ladder Approximation" to appear in Proceedings of QCD95, edited by H. Toki (World Scientific, Singapore 1996).
[Publications] S. Ishida: "Effective Weak Transition Currents of Light-through-Heavy-Quark Meson and Baryon Systems in the Covariant Oscillator Quark Model" Prog. Theor. Phys.93. 781-787 (1995)
[Publications] Ken-Ichi Aoki: "The Effectiveness of the Local Potential Approximation in the Wegner-Houghton Renormalization Group" Prog. Theor. Phys.95 (to appear). (1996)
[Publications] T. Inagaki: "Phase Structure of four-Fermion Theories at Finite Temperature and Chemical Potential in Arbitrary Dimensions" Intern. J. Mod. Phys.A10. 2241-2268 (1995)
[Publications] K. Hikasa: "Soft-breaking correction to hard supersymmetric relations ; QCD correction to squark decay" Zeitschrift fur Physik C. 69 (in press). (1996)
[Publications] T. Kurimoto et al.: "W_R effects on CP angles determination at a B factory" Physics Letters B. (to appear). (1996)
[Publications] S. Aoki: "Finite-Temperature Phase Structure of Lattice QDC with Wilson Quark Action" Physical Review Letters. 76. 873-876 (1996)
[Publications] I. Ichinose: "Gauge theory of nonrelativistic fermions and its low-energy behavior" Nuclear Physics B. 441. 483-514 (1995)
[Publications] N. Maekawa: "Vector-like Strong Coupling Theory with Small S and T Parameters" Prog. Theor. Phys.93. 919-926 (1995)
[Publications] Ricardo Guida: "Convergence of Scaled Delta Expansion : Anharmonic Oscillator" Annals of Physics (NY). 241. 152-184 (1995)
[Publications] N. Kitazawa: "Extended technicolor contribution to the 2bb vertex" Physical Review D. 52. 5374-5377 (1995)

1995 Fiscal Year Annual Research Report

対称性の力学的破れと統一理論

Principal Investigator

九後 太一 京都大学, 大学院・理学研究科, 教授 (00115833)

Research Products

[Publications] T. Kugo: "Nontriviality of Gaube-Higgs-Yukawa System and Renormalizability of Gauged Nambu-Jona-Lasinio Model" Prog. Theor. Phys. Supplement. 123 (to appear). (1996)

[Publications] K. Ishikawa et al.: "On the absence of finite size corrections in the quantized Hall couductance" Physics Letters. A210. 321-327 (1996)

[Publications] K. Akama: "Compositeness Condition at the next-to-leading order in the Nambu-Jona-Lasinio Model" Physical Review Letters. 76. 184-187 (1996)

[Publications] Y. Katsuki: "Majorana neutrino versus Dirac neutrino in e^+e^- w^+w^- through radiative correction" Physics Letters. B354. 363-370 (1995)

[Publications] H. Kanasugi et al.: "Systematic Treatment of General Time-Dependent Harmonic Oscillator in Classical and Quantum Mechanics" Prog. Theor. et al.93. 949-960 (1995)

[Publications] K. Funakubo Phys.: "CP-Violating Profile of the Electroweak Bubble Wall" Prog. Theor. Phys.94. 845-859 (1995)

[Publications] K. -I. Kondo: "Thirring Model as a Gauge Theory" Nucl. Phys. B. 450. 251-266 (1995)

[Publications] K. Higashijima: "Chiral Symmetry Breaking in Improved Ladder Approximation" to appear in Proceedings of QCD95, edited by H. Toki (World Scientific, Singapore 1996).

[Publications] S. Ishida: "Effective Weak Transition Currents of Light-through-Heavy-Quark Meson and Baryon Systems in the Covariant Oscillator Quark Model" Prog. Theor. Phys.93. 781-787 (1995)

[Publications] Ken-Ichi Aoki: "The Effectiveness of the Local Potential Approximation in the Wegner-Houghton Renormalization Group" Prog. Theor. Phys.95 (to appear). (1996)

[Publications] T. Inagaki: "Phase Structure of four-Fermion Theories at Finite Temperature and Chemical Potential in Arbitrary Dimensions" Intern. J. Mod. Phys.A10. 2241-2268 (1995)

[Publications] K. Hikasa: "Soft-breaking correction to hard supersymmetric relations ; QCD correction to squark decay" Zeitschrift fur Physik C. 69 (in press). (1996)

[Publications] T. Kurimoto et al.: "W_R effects on CP angles determination at a B factory" Physics Letters B. (to appear). (1996)

[Publications] S. Aoki: "Finite-Temperature Phase Structure of Lattice QDC with Wilson Quark Action" Physical Review Letters. 76. 873-876 (1996)

[Publications] I. Ichinose: "Gauge theory of nonrelativistic fermions and its low-energy behavior" Nuclear Physics B. 441. 483-514 (1995)

[Publications] N. Maekawa: "Vector-like Strong Coupling Theory with Small S and T Parameters" Prog. Theor. Phys.93. 919-926 (1995)

[Publications] Ricardo Guida: "Convergence of Scaled Delta Expansion : Anharmonic Oscillator" Annals of Physics (NY). 241. 152-184 (1995)

[Publications] N. Kitazawa: "Extended technicolor contribution to the 2bb vertex" Physical Review D. 52. 5374-5377 (1995)

九後太一京都大学, 大学院・理学研究科, 教授 (00115833)