1996 Fiscal Year Annual Research Report

一般相対論と動波の理論的研究

Research Project

Project/Area Number	06302021
Research Institution	KYOTO UNIVERSITY
Principal Investigator	中村卓史京都大学, 基礎物理学研究所, 教授 (80155837)
Co-Investigator(Kenkyū-buntansha)	吉村太彦東北大学, 大学院・理学研究科, 教授 (70108447) 細谷暁夫東京工業大学, 理学部, 教授 (80028258) 二間瀬敏史東北大学, 大学院・理学研究科, 教授 (20209141) 冨松彰名古屋大学, 大学院・理学研究科, 教授 (10034612) 佐々木節大阪大学, 大学院・理学研究科, 教授 (70162386)
Keywords	一般相対論 / 重力波 / 数値相対論 / 観測的宇宙論 / 素粒子統一理論 / 非一様時空 / ブラックオール / 中性子星
Research Abstract	現在は、観測・実験やシミュレーションの進展により、アインシュタインの一般相対論に対する関心が非常に集まっている時期と考えられる。本研究では、この機会を捕らえ、国内の一般相対論およびその周辺分野の一流研究者を集め、以下の3つの最重要課題を中心に共同研究を行い、一般相対論および重力波の基礎的理解を深め、相対論的物理学の新しい発展を図ることを目指し、その目的は十分達成されたと考える。 1.一般相対論における未解決問題の研究(解析的アプローチ:冨松彰、小玉英雄、中村卓史・数値的アプローチ:江里口良治、大原謙一、小嶌康史、真貝寿明、中村卓史) 2.観測的宇宙論とその一般相対論的取り扱い(佐々木節、二間瀬敏史、石原秀樹) 3.素粒子統一理論と一般相対論の関連(吉村太彦、細谷暁夫、小玉英雄) 平成8年度は、昨年度スタートした各研究班においてリストアップした課題について共同研究を行うとともに、若手育成にも多大の努力を払った。最終年度でもあるので、各研究班において得られた成果のとりまとめや相互の議論・交流を深め、それらについてより集中的に議論、共同研究を行うため、東京セミナーを定期的に行った(6月:お茶の水大学、9月:東京大学、1月;早稲田大学)。これらの成果については報告冊子に詳しくまとめられる。また、一般相対論全般において現在日本全国で行われている研究を鳥瞰する目的として、従来の大研究会「一般相対論と重力」の第6回目を東京工業大学で12月に行った。参加者は百数十名、講演数は前回同様50を越える盛況な研究会になり、相対論分野の活性化に大きく貢献したと考えられる。この成果は、例年同様、英文のプロシ-ディングとしてまとめられる。

Research Products

(40 results)

All Other

All Publications (40 results)

[Publications] K.Taniguchi and T.Nakamura: "Innermost Circular Orbit of Coalescing Neutron Star-Black Hole Binary" Prog.Theor.Phys.96(in press). (1997)
[Publications] Y.Kan-ya,R.Nishi and T.Nakamura: "Microlensing and Halo Models of the Galaxy" Publ.Astro.Soc.Japan. 48. 479 (1996)
[Publications] T.Nakamura,Y.Kanya and R.Nishi: "Minimum Total Mass of MACHOs and Halo Models of the Galaxy" Astrophys.J.Letters. (in press). (1997)
[Publications] H.Uehara,H.Susa,R.Nishi,M.Yamada and T.Nakamura: "Fragmentation of the Primordial Gas clouds and the Lower limit on the Mass of the First Stars" Astrophys.J.Letters. (in press). (1997)
[Publications] T.Harada,T.Chiba,K.Nakao and T.Nakamura: "Scalar Gravitational Wave from Oppenheimer-Snyder Collapse in Scalar-Tensor Theories of Gravity" Phys.Rev.D55(in press). (1997)
[Publications] H.Onozawa,T.Mishima,T.Okamura and H.Ishihara: "Quasinormal modes of maximally charged black holes" Phys.Rev.D53. 7033--7040 (1996)
[Publications] H.Ishihara,H.Kubotani and T.Fukuyama: "Gravitational Instantons in Ashtekar's Formalism" Int.J.Mod.Phys.A11. 2707--2720 (1996)
[Publications] O.Iguchi and H.Ishihara: "Inhomogeneity of Spatial Curvature for Inflation" Phys.Rev.D55(in press). (1997)
[Publications] H.Onozawa,T.Okamura,T.Mishima and H.Ishihara: "Perturbing supersymmetric black holes" Phys.Rev.D55(in press). (1997)
[Publications] T.Nozawa,M.Hashimoto,K.Oyamatsu and Y.Eriguchi: "Structure of Rotating Neutron Stars with Meson Condensates" Physical Review. D53. 1845-1852 (1996)
[Publications] S.Nishida,A.Lanza,Y.Eriguchi and M.Abramowicz: "Runaway Instability and Gamma-ray Bursts" M.N.Roy.Astron.Soc.278. L41-L45 (1996)
[Publications] S.Nishida and Y.Eriguchi: "Runaway Instability and Black Hole-Neutron Torus Systems." Astrophysical Journal. 461. 320-326 (1996)
[Publications] S.Yoshida Y.Eriguchi: "Ergoregion Instability Revisited--A New and General Method for Numerical Analysis of Stability" M.N.Roy.Astron.Soc.282. 580-586 (1996)
[Publications] S.Yoshida and Y.Eriguchi: "New Static Axisymmetric and Non-Vacuum Solutions in General Relativity--Equilibrium Solutions of Boson Stars" Phys.Rev.D(in press). (1997)
[Publications] K.Oohara and T.Nakamura: "Coalescence of Binary Neutron Stars" in‘Relativistic Gravitation and Gravitational Radiation'ed.by J.A.Marck and J.P.Lasota Cambridge University Pressv. (in press). (1997)
[Publications] N.Andersson,Y.Kojima and K.D.Kokkotas: "On the Oscillation Spectra of Ultra Compact Stars : an extensive survey of gravitational-wave modes" Astrophys.J.462. 855-864 (1996)
[Publications] W.Ogawaguchi and Y.Kojima: "Evolution of Close Neutron Star Binaries" Prog.Theor.Phys.96. 901-916 (1996)
[Publications] Y.Kojima: "Gravitational Correction in Neutrino Oscillations" Mod.Phys.Lett.A. 11. 2965-2970 (1996)
[Publications] H.Kodama and T.Hamazaki: "Evolution of Cosmological Perturbations in a Stage Dominated by an Oscillatry Scalar Field" Prog.Theor.Phys.96. 949-970 (1996)
[Publications] T.Hamazaki and H.Kodama and T.Nakamura: "Evolution of Cosmological Perturbations during Reheating" Prog.Theor.Phys.96. 1123-1146 (1996)
[Publications] T.Tanaka,H.Tagoshi and M.Sasaki: "Gravitational Waves by a Particle in Circular Orbits around a Schwarzschild Black Hole--5.5 Post-Newtonain Formula--" Prog.Theor.Phys.96. 1087-1101 (1996)
[Publications] K.Yamamoto,M.Sasaki and T.Tanaka: "Quantum Fluctuations and CMB Anisotropies in One-Bubble Open Inflation Models" Physical Review. D54. 5031-5048 (1996)
[Publications] M.Sasaki and T.Tanaka: "Can the Simplest Two-Field Model of Open Inflaction Survive?" Phys.Rev.D54. 4705-4708 (1996)
[Publications] T.Tanaka,Y.Mino,M.Sasaki and M.Shibata: "Gravitational Waves from a Spinning Particle in Circular Orbits around a Rotating Black Hole" Phys.Rev.D54. 3762-3777 (1996)
[Publications] A.Ohashi,H.Tagoshi and M.Sasaki: "Post-Newtonian Expansion of Gravitational Waves from a Compact Star Orbiting a Rotating Black Hole in Brans-Dicke Theory" Prog.Theor.Phys.96. 713-728 (1996)
[Publications] H.Tagoshi,M.Shibata,T.Tanaka and M.Sasaki: "Post-Newtonian Expansion of Gravitational Waves from a Particle in Circular Orbit around a Rotating Black Hole : Up toO(∨∧8)beyond the Quadrupole Formula" Phys.Rev.D54. 1439-1459 (1996)
[Publications] T.Hamazaki,M.Sasaki,T.Tanaka and K.Yamamoto: "Self-Excitation of the Tunneling Scalar Field in False Vacuum Decay" Phys.Rev.D53. 2045-2061 (1996)
[Publications] M.Sasaki and E.D.Stewart: "A General Analytic Formula for the Spectral Index of the Density Perturbations Produced during Inflation" Progress of Theoretical Physics. 95. 71-78 (1996)
[Publications] G.Yoneda and H.Shinkai: "Constraints and Reality Conditions in the Ashtekar Formulation of General Relativity" Classical and Quantum Gravity. D53. 783-790 (1996)
[Publications] K.Nakamura,Y.Oshiro and A.Tomimatsu: "Quantum Formation of Black Holes and Wormholes in the Gravitational Collapse of a Dust Shell" Phys.Rev.D53. 4356-4365 (1996)
[Publications] Y.Oshiro,K.Nakamura and A.Tomimatsu: "Critical Behavior near the Singularity in a Scalar Field Collapse" Phys.Rev.D54. 1540 (1996)
[Publications] T.Futamase: "On the validity of cosmological lens equation in general relativity" Progr.Theor.Phys. 93. 647-650 (1996)
[Publications] T.Futamase: "Averaging of a locally inhomogeneous realistic universe" Physical Review. D53. 681-689 (1996)
[Publications] T.Futamase,M.Hotta,H.Inoue and M.Yamaguchi: "Geometric Bremmsstrahlung in the early universe" Progr.Theor.Phys.96. 112-123 (1996)
[Publications] H.Asada,M.Shibata and T.Futamase: "Post-Newtonian approximation in 3+1 formalism" Progr.Theor.Phys.96. 81-112 (1996)
[Publications] A.Hosoya and S.Kobayashi: "Andeson Localization in the Sky and Cosmological Magnetic Field" Phys.Rev.D54. 4738-4743 (1996)
[Publications] M.Tanimoto,T.Koike and A.Hosoya: "Dynamics of Compact Homogeneous Universe" J.Math.Phys.38. 350-368 (1996)
[Publications] H.Fujisaki,K.Kumekawa,M.Yamaguchi and M.Yoshimura: "Particle Production and Dissipative Cosmic Field" Phys.Rev.D53. 6805 (1996)
[Publications] H.Fujisaki,K.Kumekawa,M.Yamaguchi and M.Yoshimura: "Particle Production and Gravitino Abundance after Inflation" Phys.Rev.D54. 2494 (1996)
[Publications] M.Yoshimura M.Yamada and T.Nakamura: "Baryogenesis and Thermal History after Inflation First Stars" Journal of the Korean Physical Society. 291. S236 (1996)

1996 Fiscal Year Annual Research Report

一般相対論と動波の理論的研究

Principal Investigator

中村 卓史 京都大学, 基礎物理学研究所, 教授 (80155837)

Research Products

[Publications] K.Taniguchi and T.Nakamura: "Innermost Circular Orbit of Coalescing Neutron Star-Black Hole Binary" Prog.Theor.Phys.96(in press). (1997)

[Publications] Y.Kan-ya,R.Nishi and T.Nakamura: "Microlensing and Halo Models of the Galaxy" Publ.Astro.Soc.Japan. 48. 479 (1996)

[Publications] T.Nakamura,Y.Kanya and R.Nishi: "Minimum Total Mass of MACHOs and Halo Models of the Galaxy" Astrophys.J.Letters. (in press). (1997)

[Publications] H.Uehara,H.Susa,R.Nishi,M.Yamada and T.Nakamura: "Fragmentation of the Primordial Gas clouds and the Lower limit on the Mass of the First Stars" Astrophys.J.Letters. (in press). (1997)

[Publications] T.Harada,T.Chiba,K.Nakao and T.Nakamura: "Scalar Gravitational Wave from Oppenheimer-Snyder Collapse in Scalar-Tensor Theories of Gravity" Phys.Rev.D55(in press). (1997)

[Publications] H.Onozawa,T.Mishima,T.Okamura and H.Ishihara: "Quasinormal modes of maximally charged black holes" Phys.Rev.D53. 7033--7040 (1996)

[Publications] H.Ishihara,H.Kubotani and T.Fukuyama: "Gravitational Instantons in Ashtekar's Formalism" Int.J.Mod.Phys.A11. 2707--2720 (1996)

[Publications] O.Iguchi and H.Ishihara: "Inhomogeneity of Spatial Curvature for Inflation" Phys.Rev.D55(in press). (1997)

[Publications] H.Onozawa,T.Okamura,T.Mishima and H.Ishihara: "Perturbing supersymmetric black holes" Phys.Rev.D55(in press). (1997)

[Publications] T.Nozawa,M.Hashimoto,K.Oyamatsu and Y.Eriguchi: "Structure of Rotating Neutron Stars with Meson Condensates" Physical Review. D53. 1845-1852 (1996)

[Publications] S.Nishida,A.Lanza,Y.Eriguchi and M.Abramowicz: "Runaway Instability and Gamma-ray Bursts" M.N.Roy.Astron.Soc.278. L41-L45 (1996)

[Publications] S.Nishida and Y.Eriguchi: "Runaway Instability and Black Hole-Neutron Torus Systems." Astrophysical Journal. 461. 320-326 (1996)

[Publications] S.Yoshida Y.Eriguchi: "Ergoregion Instability Revisited--A New and General Method for Numerical Analysis of Stability" M.N.Roy.Astron.Soc.282. 580-586 (1996)

[Publications] S.Yoshida and Y.Eriguchi: "New Static Axisymmetric and Non-Vacuum Solutions in General Relativity--Equilibrium Solutions of Boson Stars" Phys.Rev.D(in press). (1997)

[Publications] K.Oohara and T.Nakamura: "Coalescence of Binary Neutron Stars" in‘Relativistic Gravitation and Gravitational Radiation'ed.by J.A.Marck and J.P.Lasota Cambridge University Pressv. (in press). (1997)

[Publications] N.Andersson,Y.Kojima and K.D.Kokkotas: "On the Oscillation Spectra of Ultra Compact Stars : an extensive survey of gravitational-wave modes" Astrophys.J.462. 855-864 (1996)

[Publications] W.Ogawaguchi and Y.Kojima: "Evolution of Close Neutron Star Binaries" Prog.Theor.Phys.96. 901-916 (1996)

[Publications] Y.Kojima: "Gravitational Correction in Neutrino Oscillations" Mod.Phys.Lett.A. 11. 2965-2970 (1996)

[Publications] H.Kodama and T.Hamazaki: "Evolution of Cosmological Perturbations in a Stage Dominated by an Oscillatry Scalar Field" Prog.Theor.Phys.96. 949-970 (1996)

[Publications] T.Hamazaki and H.Kodama and T.Nakamura: "Evolution of Cosmological Perturbations during Reheating" Prog.Theor.Phys.96. 1123-1146 (1996)

[Publications] T.Tanaka,H.Tagoshi and M.Sasaki: "Gravitational Waves by a Particle in Circular Orbits around a Schwarzschild Black Hole--5.5 Post-Newtonain Formula--" Prog.Theor.Phys.96. 1087-1101 (1996)

[Publications] K.Yamamoto,M.Sasaki and T.Tanaka: "Quantum Fluctuations and CMB Anisotropies in One-Bubble Open Inflation Models" Physical Review. D54. 5031-5048 (1996)

[Publications] M.Sasaki and T.Tanaka: "Can the Simplest Two-Field Model of Open Inflaction Survive?" Phys.Rev.D54. 4705-4708 (1996)

[Publications] T.Tanaka,Y.Mino,M.Sasaki and M.Shibata: "Gravitational Waves from a Spinning Particle in Circular Orbits around a Rotating Black Hole" Phys.Rev.D54. 3762-3777 (1996)

[Publications] A.Ohashi,H.Tagoshi and M.Sasaki: "Post-Newtonian Expansion of Gravitational Waves from a Compact Star Orbiting a Rotating Black Hole in Brans-Dicke Theory" Prog.Theor.Phys.96. 713-728 (1996)

[Publications] H.Tagoshi,M.Shibata,T.Tanaka and M.Sasaki: "Post-Newtonian Expansion of Gravitational Waves from a Particle in Circular Orbit around a Rotating Black Hole : Up toO(∨∧8)beyond the Quadrupole Formula" Phys.Rev.D54. 1439-1459 (1996)

[Publications] T.Hamazaki,M.Sasaki,T.Tanaka and K.Yamamoto: "Self-Excitation of the Tunneling Scalar Field in False Vacuum Decay" Phys.Rev.D53. 2045-2061 (1996)

[Publications] M.Sasaki and E.D.Stewart: "A General Analytic Formula for the Spectral Index of the Density Perturbations Produced during Inflation" Progress of Theoretical Physics. 95. 71-78 (1996)

[Publications] G.Yoneda and H.Shinkai: "Constraints and Reality Conditions in the Ashtekar Formulation of General Relativity" Classical and Quantum Gravity. D53. 783-790 (1996)

[Publications] K.Nakamura,Y.Oshiro and A.Tomimatsu: "Quantum Formation of Black Holes and Wormholes in the Gravitational Collapse of a Dust Shell" Phys.Rev.D53. 4356-4365 (1996)

[Publications] Y.Oshiro,K.Nakamura and A.Tomimatsu: "Critical Behavior near the Singularity in a Scalar Field Collapse" Phys.Rev.D54. 1540 (1996)

[Publications] T.Futamase: "On the validity of cosmological lens equation in general relativity" Progr.Theor.Phys. 93. 647-650 (1996)

[Publications] T.Futamase: "Averaging of a locally inhomogeneous realistic universe" Physical Review. D53. 681-689 (1996)

[Publications] T.Futamase,M.Hotta,H.Inoue and M.Yamaguchi: "Geometric Bremmsstrahlung in the early universe" Progr.Theor.Phys.96. 112-123 (1996)

[Publications] H.Asada,M.Shibata and T.Futamase: "Post-Newtonian approximation in 3+1 formalism" Progr.Theor.Phys.96. 81-112 (1996)

[Publications] A.Hosoya and S.Kobayashi: "Andeson Localization in the Sky and Cosmological Magnetic Field" Phys.Rev.D54. 4738-4743 (1996)

[Publications] M.Tanimoto,T.Koike and A.Hosoya: "Dynamics of Compact Homogeneous Universe" J.Math.Phys.38. 350-368 (1996)

[Publications] H.Fujisaki,K.Kumekawa,M.Yamaguchi and M.Yoshimura: "Particle Production and Dissipative Cosmic Field" Phys.Rev.D53. 6805 (1996)

[Publications] H.Fujisaki,K.Kumekawa,M.Yamaguchi and M.Yoshimura: "Particle Production and Gravitino Abundance after Inflation" Phys.Rev.D54. 2494 (1996)

[Publications] M.Yoshimura M.Yamada and T.Nakamura: "Baryogenesis and Thermal History after Inflation First Stars" Journal of the Korean Physical Society. 291. S236 (1996)

中村卓史京都大学, 基礎物理学研究所, 教授 (80155837)