OHBA Ichiro 大場一郎

Researcher Number	10063695
Other IDs
External Links
Affiliation (based on the past Project Information) *help	2004 – 2006: 早稲田大学, 理工学術院, 教授 2001 – 2003: 早稲田大学, 理工学部, 教授 1992 – 1999: 早稲田大学, 理工学部, 教授 1991: 早稲田大学, 理工学部. 物理学科, 教授 1990: 早稲田大学, 理工学部物理学科, 教授 1989: Waseda Univ.S.-E. Faculty Professor, 理工学部, 教授 1989: 早稲田大学, 理工学部・物理学科, 教授
Review Section/Research Field	Principal Investigator Science and Engineering / 素粒子・核・宇宙線 Except Principal Investigator 素粒子・核・宇宙線 / 広領域 / 核・宇宙線・素粒子
Keywords	Principal Investigator 散逸過程 / 量子飛躍 / トンネル時間 / Langevin方程式 / Nelsonの量子力学 / Inequivalent Vacua / Quantum Field Theory in Finite Space / Bose-Einstein Condensation / Entanglement Distillation / Zeno-like Measurements … More / Quantum Computer of Kane's model / Quantum-Classical Correspondence / Stochastic State Diffusion / メゾスコピック系 / 物性基礎論 / 散逸系カオス / 重イオン衝突 / 量子コヒーレンス / 量子Zeno効果 / HBT効果 / 高エネルギー重イオン衝突 / ポース・アインシュタイン凝縮 / 短時間スケーリング則 / 確率過程量子化法 / 量子開放系 / 量子コンピュータ / エンタングルメント / 量子ゼノン効果 / ボース・アインシュタイン凝縮 / 量子力学基礎論 / 素粒子論 / 非同値真空 / 有限空間系の場の量子論 / Bose-Einstein凝縮 / エンタングルメント抽出 / ゼノン型観測による状態純化 / 半導体量子コンピュータ / 量子・古典対応 / 確率状態拡散法 / 'diffusive cut-off' / Kerneled Langevin equation / stochastic quantization / quantization of metastable systems / Chern-Simons場 / 不安定系の量子化 / ‘diffusive cut-off' / Kernel付きLangevin方程式 / 確率過程量子化 / 準安定系の量子化 / 電荷密度波 / 集団励起 / 引力ハバ-ド模型 / 非弾性効果 / 共鳴量子井戸 / 確率過程 … More Except Principal Investigator 量子力学 / FFT / neutron experiments / tunneling phenomena / dissipative process / quantum mechanics / 中性子実験 / トンネル現象 / 散逸過程 / 観測問題 / ディジタル信号処理 / 電波干渉計 / Composite model / gauge theory / Quantum gravity / mass of neutrinos / CP-violation / nonlocal theory / leptons and quarks / mass matrix / ヤン・フェルトマン量子化 / メラー・クリステンセンの相互作用 / ライト・コーン・ゲージの弦理論 / ユニタリテイ / 漸近条件 / レプトン・クォークの質量公式 / K-M行列 / 量子重力理論 / 量子論における観測の問題 / プレオン模型 / 経路積分法 / 超弦理論 / S行列と経路積分 / CPの破れ / 世代構造 / 非局所場の理論 / レプトン・クォ-クの質量 / 弦理論 / S行列のユニタリ-性 / くりこみ群 / ゲ-ジ理論 / 中性微子の質量 / 量子動力理論 / 非局所場理論 / CPのやぶれ / レプトン・クォ-クの質量行列 / stochastic process / 確率過程 / measurement problem / Engodicity / Nyquist rate / Transient Radio Source / Interterometer / 高エネルギー天体物理学 / 干渉計 / HEMT / 低雑音アンプ / トランジェント電波源 / エルゴード性 / ナイキストレート / トランジェット電波源 / 高速フーリエ変換 / Pamir / Centauro species / hadron attenuation / Cosmic-Ray families / Emulsion Chambers / Cosmic-Rays / 減衰距離 / ハドロン相互作用 / パミール高原 / 宇宙線特異現象 / 宇宙線 / センタロウゾク / ハドロンアテニュエーション / ウチュウセンファミリー / エマルシヨン・チェンバー / パミール / センタウロゾク / ハドロンアテニュエーション / ウチュウセンファミリー / エマルション・チェンバー / ウチュウセン / ハシバリー・ブラウン-トウィス効果 / 多ヒルベント空間論的観測理論 / パイオン2粒子干渉 / 量子力学的ゼノン効果 / 多ヒルベルト空間論的観測理論 / 中性子干渉 / 量子力学の観測問題 / 確率過程量子化 / 量子論的粒子相関 / オーダーパラメータ / 多ヒルベルト空間論 / 超令中性子 / 超冷中性子 / 波束の収縮 / 観測理論 / 広視野電波望遠鏡 / 電波バ-スト / 高エネルギ-天体現象 / 電波新星 / 電波天文学 Less

Research on Quantum Field Theory for Finite Space-Time Systems and Dynamics of Quantum SystemsPrincipal Investigator
- Principal Investigator
  
  OHBA Ichiro
- Project Period (FY)
  2001 – 2006
- Research Category
  
  Grant-in-Aid for Scientific Research on Priority Areas
- Review Section
  
  Science and Engineering
- Research Institution
  Waseda University
Micro-macro transition and quantum field theory
- Principal Investigator
  
  NAKAZATO Hiromichi
- Project Period (FY)
  1998 – 1999
- Research Category
  
  Grant-in-Aid for Scientific Research (B).
- Research Field
  
  素粒子・核・宇宙線
- Research Institution
  Waseda University
Nelsonの量子力学に基づくトンネリング時間及びその周辺の研究Principal Investigator
- Principal Investigator
  
  大場一郎
- Project Period (FY)
  1997
- Research Category
  
  Grant-in-Aid for Scientific Research on Priority Areas
- Research Institution
  Waseda University
Nelsonの量子力学に基づくトンネリング時間の研究Principal Investigator
- Principal Investigator
  
  大場一郎
- Project Period (FY)
  1996
- Research Category
  
  Grant-in-Aid for Scientific Research on Priority Areas
- Research Institution
  Waseda University
Quantum field theory for macroscopic and mesoscopic systems
- Principal Investigator
  
  NAKAZATO Hiromichi
- Project Period (FY)
  1996 – 1997
- Research Category
  
  Grant-in-Aid for international Scientific Research
- Research Field
  
  素粒子・核・宇宙線
- Research Institution
  Waseda University
Quantization of unstable systems with action unbounded from below-Stochastic quantization by the use of kerneled Langevin equationPrincipal Investigator
- Principal Investigator
  
  OHBA Ichiro
- Project Period (FY)
  1996 – 1998
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  素粒子・核・宇宙線
- Research Institution
  Waseda University
Study of Extremely High Energy Hadron Interactions by means of Pamir Cosmic-Ray Experiments.
- Principal Investigator
  
  HASEGAWA Syunichi
- Project Period (FY)
  1994 – 1996
- Research Category
  
  Grant-in-Aid for international Scientific Research
- Research Institution
  Advanced Research Center of Science and Engineering Waseda University
Survey of Transient Radio Sources with Digital Interferome
- Principal Investigator
  
  KOMATSU Shinichi, YAMADA Masami, 大師堂経明
- Project Period (FY)
  1994 – 1997
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  広領域
- Research Institution
  Waseda University
中性子による量子力学の理論的研究
- Principal Investigator
  
  NAMIKI Mikio
- Project Period (FY)
  1992 – 1996
- Research Category
  
  Grant-in-Aid for Scientific Research on Priority Areas
- Research Institution
  Waseda University
2次元広視野電波パトロ-ルカメラのよる高エネルギ-天体現象の研究
- Principal Investigator
  
  大師堂経明
- Project Period (FY)
  1989 – 1991
- Research Category
  
  Grant-in-Aid for General Scientific Research (A)
- Research Field
  
  広領域
- Research Institution
  Waseda University
Models of Elementary Particles and Gauge Theory
- Principal Investigator
  
  TANAKA Sho
- Project Period (FY)
  1987 – 1989
- Research Category
  
  Grant-in-Aid for Co-operative Research (A)
- Research Field
  
  核・宇宙線・素粒子
- Research Institution
  Kyoto University

All 2007 2006 2005 2004 2003 2001 Other

All Journal Article Book

[Book] Proceedings of Waseda International Symposium on Fundamental Physics : New Perspectives in Quantum Physics2003
- Author(s)
  大場一郎, 相澤洋二, 大師堂経明, 栗原進, 前田恵一,中里弘道, 田崎秀一, 湯浅一哉
- Total Pages
  200
- Publisher
  Journal of the Physical Society of Japan
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13135221
[Book] Proceedings of Waseda International Symposium on Fundamental Physics : New Perspectives in Quantum Physics2003
- Author(s)
  I. Ohba, Y. Aizawa, T. Daishido, S. Kurihara, K. Maeda, H. Nakazato, S. Tasaki, K. Yuasa
- Total Pages
  200
- Publisher
  Journal of the Physical Society of Japan
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13135221
[Book] Quantum Theory : Concepts and Methods (by A Peres)2001
- Author(s)
  I. Ohba, Y. Yamanaka, H. Nakazato (joint translation)
- Total Pages
  442
- Publisher
  Maruzen
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13135221
[Book] ペレス量子論の概念と手法2001
- Author(s)
  大場一郎, 山中由也, 中里弘道(共訳)
- Total Pages
  442
- Publisher
  丸善
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13135221
[Journal Article] On the Assumption of Initial Factorization in the Master Equation for Weakly Coupled Systems II : Solvable Models2007
- Author(s)
  K.YUASA, S.TASAKI, H.NAKAZATO, I.OHBA, et al.
- Journal Title
  
  Ann. Phys. 322
  
  Pages: 657-676
- Data Source
  KAKENHI-PROJECT-13135221
[Journal Article] On the Assumption of Initial Factorization in the Master Equation for Weakly Coupled Systems I : General Framework2007
- Author(s)
  S.TASAKI, K.YUASA, H.NAKAZATO, I.OHBA, et al.
- Journal Title
  
  Ann. Phys. 322
  
  Pages: 631-656
- Data Source
  KAKENHI-PROJECT-13135221
[Journal Article] Potential Errors in a Scheme of Universal Quantum Gates in Kane's Model2006
- Author(s)
  Y. Ota, S. Mikami, I. Ohba
- Journal Title
  
  Physical Review A73
  
  Pages: 32321-32321
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13135221
[Journal Article] Potential Errors in a Scheme of Universal Quantum Gates in Kane's Model2006
- Author(s)
  太田幸宏, 三神秀嗣, 大場一郎
- Journal Title
  
  Physical Review A 73
  
  Pages: 32321-32321
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13135221
[Journal Article] Crossover from Classical to Quantum Behavior of the Duffing Oscillator through a Pseudo-Lyapunov Exponent2005
- Author(s)
  Y. Ota, I. Ohba
- Journal Title
  
  Physical Review E71
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13135221
[Journal Article] Crossover from Classical to Quantum Behavior of the Duffing Oscillator through a Pseudo-Lyapunov Exponent2005
- Author(s)
  Y.OTA, I.OHBA
- Journal Title
  
  Physical Review E 71
- Data Source
  KAKENHI-PROJECT-13135221
[Journal Article] Crossover from Classical to Quantum Behavior of the Duffing Oscillator through a Pseudo-Lyapunov Exponent 雑誌2005
- Author(s)
  太田幸宏, 大場一郎
- Journal Title
  
  Physical Review E 71
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13135221
[Journal Article] Crossover from Classical to Quantum Behaviour of Duffing Oscillator through Pseudo-Lyapunov Exponent2004
- Author(s)
  Y.OTA, I.OHBA
- Journal Title
  
  Journal of Modern Optics 51
  
  Pages: 1099-1100
- Data Source
  KAKENHI-PROJECT-13135221
[Journal Article] Potential Errors in a Scheme of Universal Quantum Gates in Kane's Model
- Author(s)
  Y.OTA, S.MIKAMI, I.OHBA
- Journal Title
  
  Phys.Rev.A (Accepted for publication)
- Data Source
  KAKENHI-PROJECT-13135221

1. NAKAZATO Hiromichi (00180266)

# of Collaborated Projects: 4 results

# of Collaborated Products: 6 results
2. KOMATSU Shinichi (00087446)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
3. YAMANAKA Yoshiya (10174757)

# of Collaborated Projects: 3 results

# of Collaborated Products: 4 results
4. AIZAWA Yohji (70088855)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
5. OHARA Hirayoshi (40063367)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
6. NAMIKI Mikio (80063288)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
7. YAMADA Masami (30063316)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
8. 大師堂経明 (10112989)

# of Collaborated Projects: 2 results

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9. RAUCH Helmut

# of Collaborated Projects: 2 results

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10. CEA Paolo

# of Collaborated Projects: 2 results

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11. PASCAZIO Sav

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
12. HASEGAWA Syunichi (10063398)

# of Collaborated Projects: 1 results

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13. FUJIMOTO Yoichi (20063290)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. IMAFUKU Kentaro (10298169)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. YUASA Kazuya (90339721)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
16. OTA Yukihiro (60386597)

# of Collaborated Projects: 1 results

# of Collaborated Products: 7 results
17. MINE Makoto (80434306)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
18. TANAKA Sho (70025261)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
19. ISHIKAWA Kenzo (90159690)

# of Collaborated Projects: 1 results

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20. ISHIDA Shin (80059154)

# of Collaborated Projects: 1 results

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21. SENBA Kei (80033794)

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22. 室谷心 (70239557)

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23. 大竹淑恵 (50216777)

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24. 小林庸浩 (10015810)

# of Collaborated Projects: 1 results

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25. 栗原進 (80107440)

# of Collaborated Projects: 1 results

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26. 秋元秀美 (40277760)

# of Collaborated Projects: 1 results

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27. 有沢哲郎 (70267475)

# of Collaborated Projects: 1 results

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28. 玉田雅宣 (70163673)

# of Collaborated Projects: 1 results

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29. 宮本学 (80386622)

# of Collaborated Projects: 1 results

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30. 奥村雅彦 (20386600)

# of Collaborated Projects: 1 results

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31. 中村博樹 (40350483)

# of Collaborated Projects: 1 results

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32. 森田健司 (50339719)

# of Collaborated Projects: 1 results

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33. 中野董夫 (00046806)

# of Collaborated Projects: 1 results

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34. 位田正邦 (00012310)

# of Collaborated Projects: 1 results

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35. 大栗博司 (20185234)

# of Collaborated Projects: 1 results

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36. KOPENKIN V

# of Collaborated Projects: 1 results

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37. SVESHNIKOVA L

# of Collaborated Projects: 1 results

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38. MANAGADZE A

# of Collaborated Projects: 1 results

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39. ROGANOVA T

# of Collaborated Projects: 1 results

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40. RAKOBOLSKAYA I

# of Collaborated Projects: 1 results

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41. ZATSEPIN G.T

# of Collaborated Projects: 1 results

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42. PAOLO Cea

# of Collaborated Projects: 1 results

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43. SAVERIO Pascazio

# of Collaborated Projects: 1 results

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44. MAKI Jiro

# of Collaborated Projects: 1 results

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45. SVESHINIKOVA エル

# of Collaborated Projects: 1 results

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46. MANAGDZE A.

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
47. COSMAI Leona

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

OHBA Ichiro 大場 一郎

Research Projects

Research Products

Co-Researchers

Research on Quantum Field Theory for Finite Space-Time Systems and Dynamics of Quantum SystemsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Micro-macro transition and quantum field theory

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Nelsonの量子力学に基づくトンネリング時間及びその周辺の研究Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Institution

Nelsonの量子力学に基づくトンネリング時間の研究Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Institution

Quantum field theory for macroscopic and mesoscopic systems

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Quantization of unstable systems with action unbounded from below-Stochastic quantization by the use of kerneled Langevin equationPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Study of Extremely High Energy Hadron Interactions by means of Pamir Cosmic-Ray Experiments.

Principal Investigator

Project Period (FY)

Research Category

Research Institution

Survey of Transient Radio Sources with Digital Interferome

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

中性子による量子力学の理論的研究

Principal Investigator

Project Period (FY)

Research Category

Research Institution

2次元広視野電波パトロ-ルカメラのよる高エネルギ-天体現象の研究

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Models of Elementary Particles and Gauge Theory

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Book] Proceedings of Waseda International Symposium on Fundamental Physics : New Perspectives in Quantum Physics2003

Author(s)

Total Pages

Publisher

Description

Data Source

[Book] Proceedings of Waseda International Symposium on Fundamental Physics : New Perspectives in Quantum Physics2003

Author(s)

Total Pages

Publisher

Description

Data Source

[Book] Quantum Theory : Concepts and Methods (by A Peres)2001

Author(s)

OHBA Ichiro 大場一郎