1992 Fiscal Year Annual Research Report

計算物理学ー物性研究における新展開ー・第III班コンプレックス系における協力現象

Research Project

Project/Area Number	04231102
Research Institution	University of Tsukuba
Principal Investigator	高山一筑波大学, 物理学系, 教授 (40091475)
Co-Investigator(Kenkyū-buntansha)	宮下精二京都大学, 教養部, 助教授 (10143372) 西森秀稔東京工業大学, 理学部, 助教授 (70172715) 利根川孝神戸大学, 理学部, 教授 (80028167) 鈴木増雄東京大学, 理学部, 教授 (80013473) 池田研介京都大学, 基礎物理学研究所, 教授 (40151287)
Keywords	数値的対角化法 / 量子モンテカルロ法 / フラストレーション / スピングラス / フラクタル / 高次元量子カオス / 結合カオス系 / ハルデン相
Research Abstract	種々の複雑な系が示す協力現象について、以下の成果が得られた。 1]量子ピン系:汎用性が高められた、数値的対角化法のプログラムパッケージを新たに作成し、これを用いて1次元反強磁性体のハルデン相に対する次近接相互作用や不純物効果を明らかにした(利根川)。フラストレーションを含む系に対する量子モンテカルロ法に関して、負符号問題を著しく軽減する新たな手法の開発に成功を収めた(西森)。また、不純物を含むスピン系の量子モンテカルロ法を確立し(宮下)、さらに、計算物理の手法とCAM理論などの解析的理論を組合せることにより、種々のスピン系の特異な振舞いの機構を明らかにした(鈴木)。 2]ランダムスピン系:希薄磁性合金においてスピングラス(以下SG)相転移が有限温度で出現し得ることを含め、サイトランダムなSG模型におけるSG秩序の形成過程の詳細が明らかにされた(松原)。また、3次元XYおよびハイゼンベルクSGにおけるカイラル相転移の存在を強く示唆する数値解析がなされた(川村)。さらに、イジングおよびハイゼンベルグSG模型における臨界緩和現象(スローダイナミックス)の詳細が明らかにされ(高山)、また、磁場中のSG転移の有無について精度の高い検証がなされた(鈴木)。 3]その他の複雑な系:強制振動子法がフラクタル反強磁性体のマグノン励起や導波管中のフォトン局在の問題に適用され(中山)、さらに、量子スピン系の解析にも適用された(西森)。多自由度量子カオス系の散逸発生に関して、これを散逸が系の内部で発生する状態への相転移として理解できることが示された(池田)。また、大域結合カオス系における位相空間のクラスタリングや拡散型結合カオス系における進行波の発生など種々の新しい描像、現象が明らかにされた(金子)。

Research Products
(78 results)

All Other

All Publications (78 results)

[Publications] K.Nemoto: "Anomalous Phase in the 2D EA Ising Spin Glass" 'Computational Approaches in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 242-243 (1992)
[Publications] K.Hukushima: "Relaxational Dynamics in 2D Ising and 3D Isotropic Heisenberg Spin Glasses" Proc.Intern.Conf.on 'CAMSE'92' (Yokohama,Sept.1992).
[Publications] K.Nishimura: "Phase Diagram of the Naive Mean Field Model for Spin Glasses" J.Phys.:Condens.Matter. 4. 5561-5572 (1992)
[Publications] K.Hukushima: "Monte Carlo Study on the Spin Dynamics of the 2D 犲± Ising Spin Glass Model" J.Phys.:Condens.Matter.
[Publications] K.Ikeda: "Time irreversibility of classically chaotic quantum dynamics" 'Quantum Chaos' eds.G.Casati et al.(Cambridge Univ.Press). (1993)
[Publications] K.Ikeda: "Stationary dissipation due to quantum chaos:Simulated light absorption with quantum maps" Phys.Lett.A. 168. 248-255 (1992)
[Publications] K.Ikeda: "Irreversibility and quantum chaos" 'The impact of chaos on sciences and society' ed.C.Grebogi (United Nations Univ.Press). (1993)
[Publications] K.Ikeda: "Self-organization of dissipation in classically chaotic quantum systems" Annals.of Phys.
[Publications] K.Kaneko: "Homeochaos:Dynamics Stability of a symbiotic network with population dynamics and evolving mutation rates" Physica D. 56. 406-429
[Publications] K.Kaneko: "Mean Field Fluctuation in Network of Chaotic Elements" Physica 55D. 368-384 (1992)
[Publications] K.Kaneko: "Global Travleing Wave Triggered by Local Phase Slips" Phys.Rev.Lett.69. 905-908 (1992)
[Publications] K.Kaneko: "Simulating Spatiotemporal Chaos with Coupled Map Lattices" 'Computational Approaches in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 260-271 (1992)
[Publications] T.Konishi: "Clustered Motion in Symplectic Coupled Map Systems" J.Phys.A. 25. 6283-6296 (1992)
[Publications] T.Ikegami: "Evolution of Host-Parasitoid Network through Homeochaotic Dynamics" Chaos. 2. 397-408 (1992)
[Publications] K.Kaneko: "Propagation of Disturbance,Co-Moving Lyapunov exponents,and Path Summation" Phys.Lett.170A. 210-216 (1992)
[Publications] K.Kaneko: "Coupled Map Lattice-Introduction,Phenomenoloy,Lyapunov Analysis,and Applications" 'Theory and Applications of Coupled Map Lattices' ed.K.Kaneko et al.(1993)
[Publications] T.Yamamoto: "He Atom as a Classical 3-body Problem" Pyhs.Rev.Lett.(1993)
[Publications] H.Kawamura: "Monte Carlo Evidence of a Finite Temperature Chiral ordering in a Three-Dimensional XY Spin Glass" J.Phys.Soc.JPN.3062-3066 (1992)
[Publications] H.Kawamura: "Chiral Ordering in Heisenberg Spin Glasses" Phys.Rev.Lett.3785-3788 (1992)
[Publications] H.Kawamura: "Free-vortex Formation and Topological phase" Phys.Rev.B. (1993)
[Publications] M.Suzuki: "Genral Theory of Higher-Order Decomposition of Exponential Operators and Symplectic Interators" Phys.Lett.A. 165. 387-395 (1992)
[Publications] M.Suzuki: "General Nonsymmetric Higher-Order Decomposition of Exponential Operators and Symplectic Integrators" J.Phys.Soc.Jpn.61. 3015-3019 (1992)
[Publications] A.Lipowski: "Convergence of Mean-Field Approximations in Site Percolation and Application of CAM to D=1 Further Neighbours Percalation Problem" J.Stat.Phys.69. 1-16 (1992)
[Publications] A.Lipowski: "Study on Phase Transitions of Antiferromagnetic Ising Models Using the Coherent-Anomaly Method" J.Phys.Soc.Jpn.61. 2484-2490 (1992)
[Publications] K.Minami: "Coherent-Anomaly Method Applied to the Eight-Vertex Model" Physica A. 187. 282-307 (1992)
[Publications] N.Kawashima: "Monte carlo Study of the Three-Dimensional ±J Ising Spin-Glass model in a Magnetic Field" J.Phys.Soc.Jpn.61. 1777-1786 (1992)
[Publications] Y.Kinoshita: "Coherent-Anomaly Analysis of Series Expansions and its Application to the Ising Model" J.Phys.Soc.Jpn.61. 3887-3901 (1992)
[Publications] T.Kawarabayashi: "Chiral Orders in the Two-Dimensional Heisenberg Model" J.Mag.Mag.Mater.104-107. 929-930 (1992)
[Publications] T.Momoi: "Vector Chiral Order in the Quantum XXZ Antiferromagnet on a Trianglar Lattice Analyzed with the Super-Effective-Field Theory" J.Phys.Soc.Jpn.61. 3277-3286 (1992)
[Publications] T.Momoi: "Ground-State Properties and Phase Diagram of the Quantum XXZ Antiferromagnet on a Triangular Lattice" J.Phys.Soc.Jpn.61. 3732-3744 (1992)
[Publications] N.Kawashima: "Critical Bahavior of the Two-Dimensional EA Model with a Gaussian Bond Distribution" J.Pyhs.A:Math.Gen.25. 4985-5003 (1992)
[Publications] Y.Nonomura: "CAM Approach to the Ground-State Phase Transition in the Two-Dimensional Transverse Ising Model" J.Phys.A:Math.Gen.25. 5463-5473 (1992)
[Publications] Y.Nonomura: "CAM Approach to Correlation Function of Quantum Spin Chain in the Ground State" J.Phys.Soc.Jpn.61. 3960-3965 (1992)
[Publications] A.Lipowski: "On the Exact Solution of Two-Dimensional Spin S Ising Models" Physica A. (1993)
[Publications] A.Lipowski: "Exact Critical Temperature by Mean-Field Approximation" J.Phys.Soc.Jpn.61. 4356-4366 (1992)
[Publications] A.Lipowski: "The Layerd Ising Model - Mean-Field and Interfacial Approximations" J.Phys.Soc.Jpn.(1993)
[Publications] T.Kawarabayashi: "A Self-Consistent Approach to Localization Transition" Physica A. 190. 252-263 (1992)
[Publications] N.Hatano: "Ground-State Quantum Monte Carlo Method Applied to Altenating-Bond Spin Chains" J.Phys.Soc.Jpn.62. (1993)
[Publications] N.Hatano: "Correlation Length of the S=2 Antiferromagnetic Heisenberg Chain" J.Phys.Soc.Jpn.62. (1993)
[Publications] M.Suzuki: "Fractal Path Integrals with Applications to Quantum Many-Body Systems" Physica A. 191. 501-515 (1992)
[Publications] M.Suzuki: "Quantum Monte Carlo Methods - Recent Developments" Physica A ;to appear.
[Publications] M.Suzuki: "Symmetry and Coherent Approximations in Non-Equilibrium Systems" (World Scientific).
[Publications] M.suzuki: "Symmetry and Coherent Approximations in Statistical Physics" (World Scientific).
[Publications] N.Kawashima: "Algorithms for Monte Carlo Simulations of the Ising Models on a Simple Cubic Lattice" Int.J.Mod.Phys.C. 4. (1993)
[Publications] N.Kawashima: "Critical Behavior of the Three-Dimensional ±J Model in a Magnetic Field" J.Phys.Soc.Jpn.62. (1993)
[Publications] T.Tonegawa: "Ground-State Properties of the Frustrated One-Dimensional S=1 Heisenberg Model" 'Computational Approaches in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 177-178 (1992)
[Publications] M.Kaburagi: "Numerical Study of Quantum Spin Systems" 'Computataional Approaches in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 179-180 (1992)
[Publications] T.Tonegawa: "Ground-State Properties of the One-Dimensional Isotropic Spin-1 Heisenberg Antiferromagnet with Competing Interactions" J.Phys.Soc.Jpn.61. 2890-2900 (1992)
[Publications] T.Tonegawa: "Spin-Fluid to Dimer and N'eel to Dimer Phase Transitions in a Spin-1/2 Heisenberg Chain with Competing Interactions" J.Phys.Soc.Jpn.61. 4665-4666 (1992)
[Publications] I.Harada: "Magnetization Process of a Dilute Ising-Like Chain" J.Phys.Soc.Jpn.162. 301-305 (1993)
[Publications] I.Harada: "Quantum Spin Chains with Competing Exchange Interactions" 'Recent Advances in Magnetism of Transition Metal Compounds',eds.A.Kotani et al.(World Scientific). (1993)
[Publications] T.Nakayama: "Numerial method for the analysis of optical waveguides" opt.Lett.17. 326-328 (1992)
[Publications] T.Nakayama: "Dynamic Structure Factor and Single-Length Scaling for Random Fractals" J.Phys.Soc.Jpn.61. 2601-2605 (1992)
[Publications] M.Takano: "Numerical Achievement of Strong Localization of Light in Optical Waveguides with Aperiodic Grating" Jpn.J.Appl.Phys.31. L839-L842 (1992)
[Publications] T.Terao: "Localization Exponents of Waves in Percolation Systems" J.Phys.Soc.Jpn.61. 2173-2177 (1992)
[Publications] T.Nakayama: "Storong localization of photons in aperiodic optical waveguides:A numerical realization" Phys.Rev.B. 47. (1993)
[Publications] T.Nakayama: "Dynamical Correlation Function of Fractal Networks :Computer Experiments" Slow Dynamics in Condensed Matter',eds.K.Kawasaki et al.(AIP press NY). 279-282 (1992)
[Publications] T.Nakayama: "Raman Correlation Function of Percolationg Networks" 'Computational Approachs in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 280-281 (1992)
[Publications] H.Nishimori: "Note on twisted order in the frustrated quantum Heisenberag model" J.phys.Soc.Jpn.61. 391-392 (1992)
[Publications] H.Nishimoari: "Boundary between the ferromagnetic and spin glass phases" J.Phys.Soc.Jpn.61. 1011-1012 (1992)
[Publications] Y.Saika: "Long-range order in the frustrated XXZ model" J.Phys.Soc.Jpn.61. 3086-3095 (1992)
[Publications] T.Nakamura: "Reweighting method for quantum Monte Carlo simulations with the negative-sign problem" J.Phys.Soc.Jpn.61. 3494-3502 (1992)
[Publications] Y.Ozeki: "Lower critical dimension of the XY spin glass" Phys.Rev.B. 46. 2879-2884 (1992)
[Publications] 雑賀洋平: "反強磁性量子スピン系へのアプローチ" 物性研究. 57. 709-751 (1992)
[Publications] K.Maruo: "Dynamical Spin correlation function in CsCopMg_1-pCl_3" J.Phys.:Condens.Matter. 4. 2641-2650 (1992)
[Publications] F.Matsubara: "Finite-Temperature Phase Transition in Metallic Spin-Glass Alloys" Phys.Rev.Lett.68. 3781-3784 (1992)
[Publications] T.Shirakura: "Brakedown of the Strong Universality of the Three-Dimentional ±J Ising Model" J.Phys.Soc.Jpn.61. 3417-3418 (1992)
[Publications] F.Matsubara: "Reentant mixed phase of a short-range ±J Heisenberg model with anisotropy in three dimentions" Phys.Rev.B. 46. 8282-8286 (1992)
[Publications] K.Murao: "Simulation of Magnetization Process of CsCoCl_3" J.Phys.Soc.Jpn.61. 4577-4582 (1992)
[Publications] M.Iguchi: "Hybrid Monte-Carlo spin-dynamics simulation of metallic spin-glass alloys" Phys.Rev.B.
[Publications] O.Nagai: "Ground state of the antiferromagnetic Ising model of general spin S on a triangular Lattice" Phys.Rev.B. 47. 202-205 (1993)
[Publications] O.Nagai: "Spin Ordering Property of a System with Nearly Degenerate States" 'Computational approaches in condensed Matter Physics',eds.S.Miyashita et al.(Springer-Berlin). 200-204 (1992)
[Publications] T.Horiguchi: "Low-Temperature Behaviours of Antiferromagnetic Ising Model of Infinite-Spin on Triangular Lattice" J.Phys.Soc.Jpn.61. 3114-3124 (1992)
[Publications] S.Miyashita: "Quantum Effect in Random Spin Systems" 'Computational approaches in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 145-151 (1992)
[Publications] J.Behre: "Quantum Monte Carlo simulation of diluted Heisenberg antiferromagnets(S=1/2) on the square lattice" J.Phys.A :Math.Gen.25. 4745-4755 (1992)
[Publications] H.Tomita: "Statistical properties of the relaxation processes of metastable state in the kinetic Ising model" Phys.Rev.B. 46. 8886-8893 (1992)
[Publications] S.Miyashita: "Relaxation phenomena of the Fuzzy-spin model" 'Slow dynamics in condensed matter',eds.K.Kawasaki et al.(AIP press NY). 427-430
[Publications] S.Miyashita,M.Imada and H.Takayama: "Computatinol approaches in Condensed Matter Physics" Springer-Verlag, 299 (1992)

1992 Fiscal Year Annual Research Report

計算物理学ー物性研究における新展開ー・第III班コンプレックス系における協力現象

Principal Investigator

高山 一 筑波大学, 物理学系, 教授 (40091475)

Research Products

[Publications] K.Nemoto: "Anomalous Phase in the 2D EA Ising Spin Glass" 'Computational Approaches in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 242-243 (1992)

[Publications] K.Hukushima: "Relaxational Dynamics in 2D Ising and 3D Isotropic Heisenberg Spin Glasses" Proc.Intern.Conf.on 'CAMSE'92' (Yokohama,Sept.1992).

[Publications] K.Nishimura: "Phase Diagram of the Naive Mean Field Model for Spin Glasses" J.Phys.:Condens.Matter. 4. 5561-5572 (1992)

[Publications] K.Hukushima: "Monte Carlo Study on the Spin Dynamics of the 2D 犲± Ising Spin Glass Model" J.Phys.:Condens.Matter.

[Publications] K.Ikeda: "Time irreversibility of classically chaotic quantum dynamics" 'Quantum Chaos' eds.G.Casati et al.(Cambridge Univ.Press). (1993)

[Publications] K.Ikeda: "Stationary dissipation due to quantum chaos:Simulated light absorption with quantum maps" Phys.Lett.A. 168. 248-255 (1992)

[Publications] K.Ikeda: "Irreversibility and quantum chaos" 'The impact of chaos on sciences and society' ed.C.Grebogi (United Nations Univ.Press). (1993)

[Publications] K.Ikeda: "Self-organization of dissipation in classically chaotic quantum systems" Annals.of Phys.

[Publications] K.Kaneko: "Homeochaos:Dynamics Stability of a symbiotic network with population dynamics and evolving mutation rates" Physica D. 56. 406-429

[Publications] K.Kaneko: "Mean Field Fluctuation in Network of Chaotic Elements" Physica 55D. 368-384 (1992)

[Publications] K.Kaneko: "Global Travleing Wave Triggered by Local Phase Slips" Phys.Rev.Lett.69. 905-908 (1992)

[Publications] K.Kaneko: "Simulating Spatiotemporal Chaos with Coupled Map Lattices" 'Computational Approaches in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 260-271 (1992)

[Publications] T.Konishi: "Clustered Motion in Symplectic Coupled Map Systems" J.Phys.A. 25. 6283-6296 (1992)

[Publications] T.Ikegami: "Evolution of Host-Parasitoid Network through Homeochaotic Dynamics" Chaos. 2. 397-408 (1992)

[Publications] K.Kaneko: "Propagation of Disturbance,Co-Moving Lyapunov exponents,and Path Summation" Phys.Lett.170A. 210-216 (1992)

[Publications] K.Kaneko: "Coupled Map Lattice-Introduction,Phenomenoloy,Lyapunov Analysis,and Applications" 'Theory and Applications of Coupled Map Lattices' ed.K.Kaneko et al.(1993)

[Publications] T.Yamamoto: "He Atom as a Classical 3-body Problem" Pyhs.Rev.Lett.(1993)

[Publications] H.Kawamura: "Monte Carlo Evidence of a Finite Temperature Chiral ordering in a Three-Dimensional XY Spin Glass" J.Phys.Soc.JPN.3062-3066 (1992)

[Publications] H.Kawamura: "Chiral Ordering in Heisenberg Spin Glasses" Phys.Rev.Lett.3785-3788 (1992)

[Publications] H.Kawamura: "Free-vortex Formation and Topological phase" Phys.Rev.B. (1993)

[Publications] M.Suzuki: "Genral Theory of Higher-Order Decomposition of Exponential Operators and Symplectic Interators" Phys.Lett.A. 165. 387-395 (1992)

[Publications] M.Suzuki: "General Nonsymmetric Higher-Order Decomposition of Exponential Operators and Symplectic Integrators" J.Phys.Soc.Jpn.61. 3015-3019 (1992)

[Publications] A.Lipowski: "Convergence of Mean-Field Approximations in Site Percolation and Application of CAM to D=1 Further Neighbours Percalation Problem" J.Stat.Phys.69. 1-16 (1992)

[Publications] A.Lipowski: "Study on Phase Transitions of Antiferromagnetic Ising Models Using the Coherent-Anomaly Method" J.Phys.Soc.Jpn.61. 2484-2490 (1992)

[Publications] K.Minami: "Coherent-Anomaly Method Applied to the Eight-Vertex Model" Physica A. 187. 282-307 (1992)

[Publications] N.Kawashima: "Monte carlo Study of the Three-Dimensional ±J Ising Spin-Glass model in a Magnetic Field" J.Phys.Soc.Jpn.61. 1777-1786 (1992)

[Publications] Y.Kinoshita: "Coherent-Anomaly Analysis of Series Expansions and its Application to the Ising Model" J.Phys.Soc.Jpn.61. 3887-3901 (1992)

[Publications] T.Kawarabayashi: "Chiral Orders in the Two-Dimensional Heisenberg Model" J.Mag.Mag.Mater.104-107. 929-930 (1992)

[Publications] T.Momoi: "Vector Chiral Order in the Quantum XXZ Antiferromagnet on a Trianglar Lattice Analyzed with the Super-Effective-Field Theory" J.Phys.Soc.Jpn.61. 3277-3286 (1992)

[Publications] T.Momoi: "Ground-State Properties and Phase Diagram of the Quantum XXZ Antiferromagnet on a Triangular Lattice" J.Phys.Soc.Jpn.61. 3732-3744 (1992)

[Publications] N.Kawashima: "Critical Bahavior of the Two-Dimensional EA Model with a Gaussian Bond Distribution" J.Pyhs.A:Math.Gen.25. 4985-5003 (1992)

[Publications] Y.Nonomura: "CAM Approach to the Ground-State Phase Transition in the Two-Dimensional Transverse Ising Model" J.Phys.A:Math.Gen.25. 5463-5473 (1992)

[Publications] Y.Nonomura: "CAM Approach to Correlation Function of Quantum Spin Chain in the Ground State" J.Phys.Soc.Jpn.61. 3960-3965 (1992)

[Publications] A.Lipowski: "On the Exact Solution of Two-Dimensional Spin S Ising Models" Physica A. (1993)

[Publications] A.Lipowski: "Exact Critical Temperature by Mean-Field Approximation" J.Phys.Soc.Jpn.61. 4356-4366 (1992)

[Publications] A.Lipowski: "The Layerd Ising Model - Mean-Field and Interfacial Approximations" J.Phys.Soc.Jpn.(1993)

[Publications] T.Kawarabayashi: "A Self-Consistent Approach to Localization Transition" Physica A. 190. 252-263 (1992)

[Publications] N.Hatano: "Ground-State Quantum Monte Carlo Method Applied to Altenating-Bond Spin Chains" J.Phys.Soc.Jpn.62. (1993)

[Publications] N.Hatano: "Correlation Length of the S=2 Antiferromagnetic Heisenberg Chain" J.Phys.Soc.Jpn.62. (1993)

[Publications] M.Suzuki: "Fractal Path Integrals with Applications to Quantum Many-Body Systems" Physica A. 191. 501-515 (1992)

[Publications] M.Suzuki: "Quantum Monte Carlo Methods - Recent Developments" Physica A ;to appear.

[Publications] M.Suzuki: "Symmetry and Coherent Approximations in Non-Equilibrium Systems" (World Scientific).

[Publications] M.suzuki: "Symmetry and Coherent Approximations in Statistical Physics" (World Scientific).

[Publications] N.Kawashima: "Algorithms for Monte Carlo Simulations of the Ising Models on a Simple Cubic Lattice" Int.J.Mod.Phys.C. 4. (1993)

[Publications] N.Kawashima: "Critical Behavior of the Three-Dimensional ±J Model in a Magnetic Field" J.Phys.Soc.Jpn.62. (1993)

[Publications] T.Tonegawa: "Ground-State Properties of the Frustrated One-Dimensional S=1 Heisenberg Model" 'Computational Approaches in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 177-178 (1992)

[Publications] M.Kaburagi: "Numerical Study of Quantum Spin Systems" 'Computataional Approaches in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 179-180 (1992)

[Publications] T.Tonegawa: "Ground-State Properties of the One-Dimensional Isotropic Spin-1 Heisenberg Antiferromagnet with Competing Interactions" J.Phys.Soc.Jpn.61. 2890-2900 (1992)

[Publications] T.Tonegawa: "Spin-Fluid to Dimer and N'eel to Dimer Phase Transitions in a Spin-1/2 Heisenberg Chain with Competing Interactions" J.Phys.Soc.Jpn.61. 4665-4666 (1992)

[Publications] I.Harada: "Magnetization Process of a Dilute Ising-Like Chain" J.Phys.Soc.Jpn.162. 301-305 (1993)

[Publications] I.Harada: "Quantum Spin Chains with Competing Exchange Interactions" 'Recent Advances in Magnetism of Transition Metal Compounds',eds.A.Kotani et al.(World Scientific). (1993)

[Publications] T.Nakayama: "Numerial method for the analysis of optical waveguides" opt.Lett.17. 326-328 (1992)

[Publications] T.Nakayama: "Dynamic Structure Factor and Single-Length Scaling for Random Fractals" J.Phys.Soc.Jpn.61. 2601-2605 (1992)

[Publications] M.Takano: "Numerical Achievement of Strong Localization of Light in Optical Waveguides with Aperiodic Grating" Jpn.J.Appl.Phys.31. L839-L842 (1992)

[Publications] T.Terao: "Localization Exponents of Waves in Percolation Systems" J.Phys.Soc.Jpn.61. 2173-2177 (1992)

[Publications] T.Nakayama: "Storong localization of photons in aperiodic optical waveguides:A numerical realization" Phys.Rev.B. 47. (1993)

[Publications] T.Nakayama: "Dynamical Correlation Function of Fractal Networks :Computer Experiments" Slow Dynamics in Condensed Matter',eds.K.Kawasaki et al.(AIP press NY). 279-282 (1992)

[Publications] T.Nakayama: "Raman Correlation Function of Percolationg Networks" 'Computational Approachs in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 280-281 (1992)

[Publications] H.Nishimori: "Note on twisted order in the frustrated quantum Heisenberag model" J.phys.Soc.Jpn.61. 391-392 (1992)

[Publications] H.Nishimoari: "Boundary between the ferromagnetic and spin glass phases" J.Phys.Soc.Jpn.61. 1011-1012 (1992)

[Publications] Y.Saika: "Long-range order in the frustrated XXZ model" J.Phys.Soc.Jpn.61. 3086-3095 (1992)

[Publications] T.Nakamura: "Reweighting method for quantum Monte Carlo simulations with the negative-sign problem" J.Phys.Soc.Jpn.61. 3494-3502 (1992)

[Publications] Y.Ozeki: "Lower critical dimension of the XY spin glass" Phys.Rev.B. 46. 2879-2884 (1992)

[Publications] 雑賀 洋平: "反強磁性量子スピン系へのアプローチ" 物性研究. 57. 709-751 (1992)

[Publications] K.Maruo: "Dynamical Spin correlation function in CsCopMg_1-pCl_3" J.Phys.:Condens.Matter. 4. 2641-2650 (1992)

[Publications] F.Matsubara: "Finite-Temperature Phase Transition in Metallic Spin-Glass Alloys" Phys.Rev.Lett.68. 3781-3784 (1992)

[Publications] T.Shirakura: "Brakedown of the Strong Universality of the Three-Dimentional ±J Ising Model" J.Phys.Soc.Jpn.61. 3417-3418 (1992)

[Publications] F.Matsubara: "Reentant mixed phase of a short-range ±J Heisenberg model with anisotropy in three dimentions" Phys.Rev.B. 46. 8282-8286 (1992)

[Publications] K.Murao: "Simulation of Magnetization Process of CsCoCl_3" J.Phys.Soc.Jpn.61. 4577-4582 (1992)

[Publications] M.Iguchi: "Hybrid Monte-Carlo spin-dynamics simulation of metallic spin-glass alloys" Phys.Rev.B.

[Publications] O.Nagai: "Ground state of the antiferromagnetic Ising model of general spin S on a triangular Lattice" Phys.Rev.B. 47. 202-205 (1993)

[Publications] O.Nagai: "Spin Ordering Property of a System with Nearly Degenerate States" 'Computational approaches in condensed Matter Physics',eds.S.Miyashita et al.(Springer-Berlin). 200-204 (1992)

[Publications] T.Horiguchi: "Low-Temperature Behaviours of Antiferromagnetic Ising Model of Infinite-Spin on Triangular Lattice" J.Phys.Soc.Jpn.61. 3114-3124 (1992)

[Publications] S.Miyashita: "Quantum Effect in Random Spin Systems" 'Computational approaches in Condensed Matter Physics',eds.S.Miyashita et al.(Springer,Berlin). 145-151 (1992)

[Publications] J.Behre: "Quantum Monte Carlo simulation of diluted Heisenberg antiferromagnets(S=1/2) on the square lattice" J.Phys.A :Math.Gen.25. 4745-4755 (1992)

高山一筑波大学, 物理学系, 教授 (40091475)

[Publications] 雑賀洋平: "反強磁性量子スピン系へのアプローチ" 物性研究. 57. 709-751 (1992)