1998 Fiscal Year Annual Research Report

高温高密度における非摂動現象

Research Project

Project/Area Number	08304024
Research Institution	HIROSHIMA UNIVERSITY
Principal Investigator	宮村修広島大学, 理学部, 教授 (80029511)
Co-Investigator(Kenkyū-buntansha)	小平治郎広島大学, 理学部, 助教授 (40127080) 岡真東京工業大学, 理学部, 教授 (60144606) 美谷島実信州大学, 理学部, 教授 (20068258) 斉藤栄名古屋大学, 理学研究科, 教授 (40022694) 岩崎正春高知大学, 理学部, 教授 (80117001)
Keywords	量子色力学 / 超高温超高密度 / クォーク・グルーオンプラズマ / カラー超伝導 / カイラル対称性 / クォーク閉じ込め / 熱場の理論 / ハドロン
Research Abstract	量子色力学の高密度状態において、クオーク間の引力を起源とするカラー超伝導相が出現する可能性がBCS的な平均場理論を用いて指摘された。(岩崎)また、カイラル対称性回復がもたらすスカラー的揺らぎの増大現象が再検討され、実験ですでにそのような前駆現象が示唆されている可能性が指摘されるとともに、新たな検証実験の提案がなされた。(初田等、国広)カイラル対称性の破れの駆動機構の研究がインスタントン起源有効理論とベーテ・サルピーター方程式を用いて行われ、重粒子を含むスペクトルの詳細との対応が明らかにされた。(高木等、岡等)相転移現象の解析に関する理論的研究として、有効ポテンシャルにたいする新しい計算処方が開発され、温度依存量子効果の解析に適用された。(稲垣)ゼロ温度および高温度の量子色力学の基底状態のゲージ場構造に関して、格子ゲージ場シミュレーションがなされ、閉じ込め機構のみならず、位相構造およびカイラル破れとモノポール的配位の対応が示された。(鈴木等、宮村等)一方、量子色力学場の励起状態であるハドロンの内部構造に関して、スピン構造関数に関する研究がなされ、定式化が行われるとともに、高次摂動効果が評価された。(小平等)また、中性重粒子の電気的偏極率の評価が行われた。(斎藤等)微視的基本過程の理論的取り扱いに関する研究として、高エネルギーハドロン及びレプトン衝突の粒子生成の解析がなされ、重粒子生成機構と多重度分布の特性が明らかにされた。(野田等、美谷島等)また、基本過程の自動計算が超対称粒子も包含する形式で開発された。(田中、加藤等)この他、高重力がもたらす相転移現象に関して研究が行われた。(牟田、稲垣等、仲) 平成10年度を含む3年間にわたる本研究を総括するため、平成10年12月に研究分担者によるまとめの研究会を広島で開催し、研究結果の検討と成果のまとめを行った。

Research Products

(34 results)

All Other

All Publications (34 results)

[Publications] O.Miyamura: "Hadrons and Topological Charge from Magnetic Currents" Prog.Theor.Phys.Supplement. 609-618 (1998)
[Publications] S.Kitahara,et al.: "Monopoles and hadron spectrum in quenched QCD" Nuclear Physics B. 533. 576-590 (1998)
[Publications] S.Sasaki et al.: "Lattice study of UA (1) anomaly : The role of QCD monopoles" Phys.Lett.B. 443. 331-337 (1998)
[Publications] S.Sasaki et al.: "Topological aspect of abelian projected SU (2) lattice gauge theory" Phys.Rev.D. (刊行予定). (1999)
[Publications] M.Iwasaki: "Phase transition of Quark Matter at High Density" Prog.Theor.Phys.100・2. 461-464 (1999)
[Publications] M.Iwasaki: "Superconductivity of Quark Matter at Finite Temperature." Prog.Theor.Phys.101・1. 91-99 (1999)
[Publications] T.Kunihiro: "Renormalization group resummation of a divergent series of the perturbative wave functions of quantum systems" Prog.Theor.Phys.Supplement. 131. 459-470 (1998)
[Publications] T.Matsufuji et al.: "A Scalar-Tensor Theory of Gravity Based on Non-communative Geometry" Prog.Theor.Phys.98. 719-731 (1997)
[Publications] S.Naka: "A Schrodinger-Type Equation in Homogeneous Cananical Formalism and Protective Measurement" Prog.Theor.Phys.101. 177-189 (1999)
[Publications] J.Kodaira et al.: "QCD Corrections to Spin Correlations in Top Quark Production at Lepton Colliders" Phys.Rev.D. 59. 014023 1-16 (1999)
[Publications] J.Kodaira et al.: "Polarized Structure Functions in QCD" Prog.Theor.Phys.101. 191-242 (1999)
[Publications] O.Kiriyama et al.: "Chiral Phase Transition at High Temperature in the QCD-like Gauge Theory" Phys.Rev.D. 58. 116001 1-8 (1998)
[Publications] T.Osada et al.: "Statistical Model Analysis of Multiparticle Correlations in e+e-Annihilation" Phys.Rev.D. 59. 014024 1-16 (1999)
[Publications] T.Nishikawa et al.: "Electric Polarizabilities of Neutral Baryons in the QCD Sum Rule" Phys.Lett.B. 422. 26-32 (1998)
[Publications] S.Sito et al.: "Do really the Seagull terms survive for the electric polarizability of the nucleon?" Nuclear Phys.A. 628. 112-118 (1998)
[Publications] Y.Tanushi et al.: "Spin-dependent Polarizability of Nucleon with Dispersion Relation in the Skyrme Model" Phys.Lett.B. 425. 6-12 (1998)
[Publications] M.Biyajima et al.: "Isotopic spin effect in two-pion and three-pion Bose-Einstein correlations" Phys.Rev.C. 58. 2316-2320 (1998)
[Publications] M.Biyajima et al.: "Analysis of Bose-Einstein correlations in e+e-to W+W- events including final state interactions" Phys.Rev.D. 58. 114013 1-4 (1998)
[Publications] M.Biyajima et al.: "Cumulant moments in hadron-nucleus collisions and stochastic processes" Phys.Rev.C. 58. 1720-1726 (1998)
[Publications] M.Biyajima et al.: "Analyses of multiplicity distributions of e+e-and e-p collisions by means of modified negative binomial distribution and Laguerre type distribution : Interrelation od solutions in stochastic processes" Phys.Rev.D. 58. 037505 1-4 (1998)
[Publications] T.Inagaki: "Non-Perturbative Approach to the Effective Potential of the lambda phi^4 Theory at Finite Temperature" Prog.Theor.Phys.99. 1069-1084 (1998)
[Publications] T.Inagaki: "Dynamical Symmetry Breaking in Compact Flat Spaces" Prog.Theor.Phys.99. 237-255 (1998)
[Publications] H.Kim et al.: "Properties of N^* (1535) at Finite Density in the Extended Parity-Doublet Models" Nuclear Phys.A. 640. 77-88 (1998)
[Publications] K.Naito et al.: "Dynamical Chiral Symmetry Breaking in Effective Models of QCD in the Bethe-Salpeter Approach" Phys.Rev.C. 59. 1095-1106 (1999)
[Publications] K.Naito et al.: "Approximation of the Schwinger-Dyson and the Bethe-Salpeter Equations and Chiral Symmetry of QCD" Phys.Rev.C. 59. 542-545 (1999)
[Publications] K.Naito et al.: "Finite quark mass effects in the improved ladder Bethe-Salpeter amplitudes" Phys.Rev.C. 59 (in press). (1999)
[Publications] S.Chiku et al.: "Soft Mode Associated with Chiral Transition at Finite Temperature" Phys.Rev.D. 57. 6-26 (1998)
[Publications] S.Chiku et al.: "Optimized Perturbation Theory at Finite Temperature" Phys.Rev.D. 58. 076001 1-17 (1998)
[Publications] A.Niegawa: "Comment on Infrared and pinching singularities in out of equilibrium QCD plasmas" Phys.J.C. 5・2. 345-348 (1998)
[Publications] T.Tashiro et al.: "Charmed hadron production in pi-p and kp collisions and leading particle effect by constituent quark-diquark cascade model" Eur.Phys.J.C. 2. 733-740 (1998)
[Publications] H.Tanaka et al.: "The Grace System for the minimal supersymmetric standard model" Nuc.Inst.Methods in Phys.Res.A. 389. 295-298 (1997)
[Publications] H.Tanaka et al.: "GRC4FV1.1 : A four fermion event generator for e+e- collisions" Comput.Phys.Commun. 100. 128-156 (1997)
[Publications] H.Tanaka et al.: "SUSY23 v2.0 : an Event Generator for Supersymmetric Processes at e+e- Collisions" Comput.Phys.Commun. 111. 185-218 (1998)
[Publications] H.Tanaka et al.: "Comparison of Algorithm for Singlet Parton Generations in Deep Inelastic Scattering" Mod.Phys.Lett.A.13・14. 1085-1094 (1998)

1998 Fiscal Year Annual Research Report

高温高密度における非摂動現象

Principal Investigator

宮村 修 広島大学, 理学部, 教授 (80029511)

Research Products

[Publications] O.Miyamura: "Hadrons and Topological Charge from Magnetic Currents" Prog.Theor.Phys.Supplement. 609-618 (1998)

[Publications] S.Kitahara,et al.: "Monopoles and hadron spectrum in quenched QCD" Nuclear Physics B. 533. 576-590 (1998)

[Publications] S.Sasaki et al.: "Lattice study of UA (1) anomaly : The role of QCD monopoles" Phys.Lett.B. 443. 331-337 (1998)

[Publications] S.Sasaki et al.: "Topological aspect of abelian projected SU (2) lattice gauge theory" Phys.Rev.D. (刊行予定). (1999)

[Publications] M.Iwasaki: "Phase transition of Quark Matter at High Density" Prog.Theor.Phys.100・2. 461-464 (1999)

[Publications] M.Iwasaki: "Superconductivity of Quark Matter at Finite Temperature." Prog.Theor.Phys.101・1. 91-99 (1999)

[Publications] T.Kunihiro: "Renormalization group resummation of a divergent series of the perturbative wave functions of quantum systems" Prog.Theor.Phys.Supplement. 131. 459-470 (1998)

[Publications] T.Matsufuji et al.: "A Scalar-Tensor Theory of Gravity Based on Non-communative Geometry" Prog.Theor.Phys.98. 719-731 (1997)

[Publications] S.Naka: "A Schrodinger-Type Equation in Homogeneous Cananical Formalism and Protective Measurement" Prog.Theor.Phys.101. 177-189 (1999)

[Publications] J.Kodaira et al.: "QCD Corrections to Spin Correlations in Top Quark Production at Lepton Colliders" Phys.Rev.D. 59. 014023 1-16 (1999)

[Publications] J.Kodaira et al.: "Polarized Structure Functions in QCD" Prog.Theor.Phys.101. 191-242 (1999)

[Publications] O.Kiriyama et al.: "Chiral Phase Transition at High Temperature in the QCD-like Gauge Theory" Phys.Rev.D. 58. 116001 1-8 (1998)

[Publications] T.Osada et al.: "Statistical Model Analysis of Multiparticle Correlations in e+e-Annihilation" Phys.Rev.D. 59. 014024 1-16 (1999)

[Publications] T.Nishikawa et al.: "Electric Polarizabilities of Neutral Baryons in the QCD Sum Rule" Phys.Lett.B. 422. 26-32 (1998)

[Publications] S.Sito et al.: "Do really the Seagull terms survive for the electric polarizability of the nucleon?" Nuclear Phys.A. 628. 112-118 (1998)

[Publications] Y.Tanushi et al.: "Spin-dependent Polarizability of Nucleon with Dispersion Relation in the Skyrme Model" Phys.Lett.B. 425. 6-12 (1998)

[Publications] M.Biyajima et al.: "Isotopic spin effect in two-pion and three-pion Bose-Einstein correlations" Phys.Rev.C. 58. 2316-2320 (1998)

[Publications] M.Biyajima et al.: "Analysis of Bose-Einstein correlations in e+e-to W+W- events including final state interactions" Phys.Rev.D. 58. 114013 1-4 (1998)

[Publications] M.Biyajima et al.: "Cumulant moments in hadron-nucleus collisions and stochastic processes" Phys.Rev.C. 58. 1720-1726 (1998)

[Publications] M.Biyajima et al.: "Analyses of multiplicity distributions of e+e-and e-p collisions by means of modified negative binomial distribution and Laguerre type distribution : Interrelation od solutions in stochastic processes" Phys.Rev.D. 58. 037505 1-4 (1998)

[Publications] T.Inagaki: "Non-Perturbative Approach to the Effective Potential of the lambda phi^4 Theory at Finite Temperature" Prog.Theor.Phys.99. 1069-1084 (1998)

[Publications] T.Inagaki: "Dynamical Symmetry Breaking in Compact Flat Spaces" Prog.Theor.Phys.99. 237-255 (1998)

[Publications] H.Kim et al.: "Properties of N^* (1535) at Finite Density in the Extended Parity-Doublet Models" Nuclear Phys.A. 640. 77-88 (1998)

[Publications] K.Naito et al.: "Dynamical Chiral Symmetry Breaking in Effective Models of QCD in the Bethe-Salpeter Approach" Phys.Rev.C. 59. 1095-1106 (1999)

[Publications] K.Naito et al.: "Approximation of the Schwinger-Dyson and the Bethe-Salpeter Equations and Chiral Symmetry of QCD" Phys.Rev.C. 59. 542-545 (1999)

[Publications] K.Naito et al.: "Finite quark mass effects in the improved ladder Bethe-Salpeter amplitudes" Phys.Rev.C. 59 (in press). (1999)

[Publications] S.Chiku et al.: "Soft Mode Associated with Chiral Transition at Finite Temperature" Phys.Rev.D. 57. 6-26 (1998)

[Publications] S.Chiku et al.: "Optimized Perturbation Theory at Finite Temperature" Phys.Rev.D. 58. 076001 1-17 (1998)

[Publications] A.Niegawa: "Comment on Infrared and pinching singularities in out of equilibrium QCD plasmas" Phys.J.C. 5・2. 345-348 (1998)

[Publications] T.Tashiro et al.: "Charmed hadron production in pi-p and kp collisions and leading particle effect by constituent quark-diquark cascade model" Eur.Phys.J.C. 2. 733-740 (1998)

[Publications] H.Tanaka et al.: "The Grace System for the minimal supersymmetric standard model" Nuc.Inst.Methods in Phys.Res.A. 389. 295-298 (1997)

[Publications] H.Tanaka et al.: "GRC4FV1.1 : A four fermion event generator for e+e- collisions" Comput.Phys.Commun. 100. 128-156 (1997)

[Publications] H.Tanaka et al.: "SUSY23 v2.0 : an Event Generator for Supersymmetric Processes at e+e- Collisions" Comput.Phys.Commun. 111. 185-218 (1998)

[Publications] H.Tanaka et al.: "Comparison of Algorithm for Singlet Parton Generations in Deep Inelastic Scattering" Mod.Phys.Lett.A.13・14. 1085-1094 (1998)

宮村修広島大学, 理学部, 教授 (80029511)