Kita Takafumi 北孝文

… Alternative Names

北孝文キタタカフミ

KITA Takafumi 北孝文

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Researcher Number	20186224
Other IDs
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Affiliation (Current)	2025: 北海道大学, 理学研究院, 研究院研究員
Affiliation (based on the past Project Information) *help	2020 – 2023: 北海道大学, 理学研究院, 教授 2012: 北海道大学, 理学(系)研究科(研究院), 准教授 2010 – 2012: 北海道大学, 大学院・理学研究院, 准教授 2007 – 2008: Hokkaido University, Faculty of Science, Associate Professor 2006: 北海道大学, 大学院理学研究院, 助教授 … More 2001 – 2005: 北海道大学, 大学院・理学研究科, 助教授 2000: 北大, 理学(系)研究科, 助教授 1999: 北海道大学, 大学院・理学研究科, 助教授 1994: 北海道大学, 理学部, 助教授 Less
Review Section/Research Field	Principal Investigator 固体物性Ⅱ(磁性・金属・低温) / Condensed matter physics II / Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related Except Principal Investigator Condensed matter physics II
Keywords	Principal Investigator 超伝導 / ボーズ・アインシュタイン凝縮 / 超流動 / エントロピー / 第二種超伝導体 / 繰り込み群 / 異常次元 / 超流動ボーズ液体論 / ワード・高橋恒等式 / 3点バーテックス … More / 汎関数繰り込み群 / 臨界指数 / 南部・ゴールドストーン・モード / ラティンジャー・ワード汎関数 / FLEX近似 / Upper critical field / Bose-Einstein condensation / Superfluid ^3He / Quantized vortices / Type-II superconductors / 異方的超伝導 / ゲージ不変性とホール効果 / 渦糸の動力学 / 超伝導準古典方程式 / 輸送方程式 / ド・ハース-ファン・アルフェン効果 / アルカリ原子気体 / 超流動^3He / スピン磁化率 / 電気抵抗 / 真木パラメータ / 上部臨界磁場 / 超流動3He / 量子渦 / 密度揺らぎ / 保存近似 / 自己無撞着摂動展開 / 南部-ゴールドストーン・ボゾン / ゴールドストーンの定理 / BCS-BECクロスオーバー / ボゴリュボフ励起 / グリーン関数 / 場の量子論 / 自発的対称性の破れ / ボーズ-アインシュタイン凝縮 / ド・ハースーファン・アルフェン効果 / 非平衡統計力学 / 量子輸送方程式 / 応答係数 / 超低温 / 準粒子状態 / 渦糸格子状態 / 時間反転対称性の破れ / ^3Heの軌道角運動量 / 超伝導の理論 … More Except Principal Investigator CeCoIn5 / Kight shift / FFLO state / Strongly Correlated System / Vortex state / NMR / FFLO相 / 物性実験 / 低温物性 / 磁性 / CeCoIn_5 / CeCoIn 5 / FFLO / 核磁気共鳴 / ナイトシフト / 超伝導 / 強相関電子系 Less

Theoretical Study of Anomalous Long-Range Correlations in Bose SuperfluidsPrincipal Investigator
- Principal Investigator
  
  北孝文
- Project Period (FY)
  2020 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
- Research Institution
  Hokkaido University
Theoretical study of Bose-Einstein condensates using a new self-consistent perturbation expansionPrincipal Investigator
- Principal Investigator
  
  KITA Takafumi
- Project Period (FY)
  2010 – 2012
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Condensed matter physics II
- Research Institution
  Hokkaido University
Quantitative calculations of response functions of materials andproperties of type-II superconductorsPrincipal Investigator
- Principal Investigator
  
  KITA Takafumi
- Project Period (FY)
  2006 – 2008
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Condensed matter physics II
- Research Institution
  Hokkaido University
NMR Study of peculiar electronic state in the vortex core of anisotrpic superconducttors
- Principal Investigator
  
  KUMAGAI Ken-ichi
- Project Period (FY)
  2005 – 2007
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  Condensed matter physics II
- Research Institution
  Hokkaido University
Theoretical study on vortex states in superconductorsPrincipal Investigator
- Principal Investigator
  
  KITA Takafumi
- Project Period (FY)
  2001 – 2004
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  固体物性Ⅱ(磁性・金属・低温)
- Research Institution
  Hokkaido University
渦糸状態の微視的解明をめざして-異方的超伝導体の理論的研究Principal Investigator
- Principal Investigator
  
  北孝文
- Project Period (FY)
  1999 – 2001
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  固体物性Ⅱ(磁性・金属・低温)
- Research Institution
  Hokkaido University
時間反転対称性の破れた超伝導体の理論的研究Principal Investigator
- Principal Investigator
  
  北孝文
- Project Period (FY)
  1994
- Research Category
  
  Grant-in-Aid for Encouragement of Young Scientists (A)
- Research Field
  
  固体物性Ⅱ(磁性・金属・低温)
- Research Institution
  Hokkaido University

[Book] New Developments in Superconductivity Research (edited by R.W.Stevens)2003
- Author(s)
  K.Yasui, T.Kita
- Total Pages
  20
- Publisher
  Nova Science Publishers (New York)
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Fluctuation Exchange Approximation for Bose?Einstein Condensates2023
- Author(s)
  Kita Takafumi
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 92 Issue: 10
- DOI
  10.7566/jpsj.92.104401
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03848
[Journal Article] How Infrared Singularities Affect Nambu-Goldstone Bosons at Finite Temperatures2023
- Author(s)
  Takafumi Kita
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 92 Issue: 5
- DOI
  10.7566/jpsj.92.054004
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03848
[Journal Article] Legendre Transformation of the Luttinger-Ward Functional from the Bare Interaction Vertex to the Renormalized One2022
- Author(s)
  Takafumi Kita
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 91 Issue: 11
- DOI
  10.7566/jpsj.91.114002
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03848
[Journal Article] Quantum Field Theory of Correlated Bose?Einstein Condensates: I. Basic Formalism2021
- Author(s)
  Kita Takafumi
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 90 Issue: 2 Pages: 024001-024001
- DOI
  10.7566/jpsj.90.024001
- NAID
  40022484950
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03848
[Journal Article] Quantum Field Theory of Correlated Bose?Einstein Condensates: II. Ward?Takahashi Identities and Correlation Functions2021
- Author(s)
  Kita Takafumi
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 90 Issue: 2 Pages: 024002-024002
- DOI
  10.7566/jpsj.90.024002
- NAID
  40022484952
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03848
[Journal Article] Ground-State Energy and Condensate Density of a Dilute Bose Gas Revisited2013
- Author(s)
  Kazumasa TSUTSUI and Takafumi KITA
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 82 Issue: 6 Pages: 063001-063001
- DOI
  10.7566/jpsj.82.063001
- NAID
  40019665160
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Ground-State Energy and Condensate Density of a Dilute Bose Gas Revisited2013
- Author(s)
  T. Kita
- Journal Title
  
  J. Phys. Soc. Jpn
  
  Volume: 82
- NAID
  40019665160
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Studying Superfluid Transition of a Dilute Bose Gas by Conserving Approximations2012
- Author(s)
  Kazumasa TSUTSUI and Takafumi KITA
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 81 Issue: 11 Pages: 114002-114002
- DOI
  10.1143/jpsj.81.114002
- NAID
  40019484044
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Studying Superfluid Transition of a Dilute Bose Gas by Conserving Approximations2012
- Author(s)
  T. Kita
- Journal Title
  
  J. Phys. Soc. Jpn
  
  Volume: 81
- NAID
  40019484044
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Properties of Nambu-Goldstone Bosons in a Single-Component Bose-Einstein Condensate2011
- Author(s)
  T. Kita
- Journal Title
  
  J. Phys. Soc. Jpn
  
  Volume: 80
- NAID
  40018947229
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Self-Consistent Approximations for Superconductivity beyond the Bardee-Cooper-Schrieffer Theory2011
- Author(s)
  T. Kita
- Journal Title
  
  J. Phys. Soc. Jpn
  
  Volume: 80
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Self-Consistent Approximations for Superconductivity beyond the Bardeen-Cooper-Schrieffer Theory2011
- Author(s)
  T.Kita
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 80 Issue: 12 Pages: 124-704
- DOI
  10.1143/jpsj.80.124704
- NAID
  40019137453
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Properties of Nambu-Goldstone Bosons in a Single-Component Bose-Einstein Condensate2011
- Author(s)
  T.Kita
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 80 Issue: 8 Pages: 84-606
- DOI
  10.1143/jpsj.80.084606
- NAID
  40018947229
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Introduction to Nonequilibrium Statistical Mechanics with Quantum Field Theory2010
- Author(s)
  T.Kita
- Journal Title
  
  Progress of Theoretical Physics
  
  Volume: 123 Pages: 581-658
- NAID
  110007612417
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Introduction to Nonequilibrium Statistical Mechanics with Quantum Field Theory2010
- Author(s)
  T. Kita
- Journal Title
  
  Prog. Theor. Phys
  
  Volume: 123 Pages: 581-658
- NAID
  110007612417
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Exact Results on the Two-Particle Green's Function of a Bose-Einstein Condensate2010
- Author(s)
  T. Kita
- Journal Title
  
  Phys. Rev. B
  
  Volume: 81
- NAID
  120002169310
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Exact results on the two-particle Green's function of a Bose-Einstein condensate2010
- Author(s)
  T.Kita
- Journal Title
  
  PHYSICAL REVIEW B
  
  Volume: 81
- NAID
  120002169310
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540356
[Journal Article] Hall coefficient of equilibrium supercurrents flowing inside superconductors2009
- Author(s)
  T. Kita
- Journal Title
  
  Physical Review B 79 024521(1-6)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Hall coefficient of equilibrium supercurrents flowing inside superconductors2009
- Author(s)
  T. Kita
- Journal Title
  
  Physical Review B 79
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] ボーズ凝縮相の有限温度理論2009
- Author(s)
  北孝文
- Journal Title
  
  日本物理学会誌 64
  
  Pages: 170-178
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Quantum Transport Equation for Bloch Electrons in Electromagnetic Fields2008
- Author(s)
  T. Kita
- Journal Title
  
  Journal of the Physical Society of Japan 77
- NAID
  110006613902
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] 量子輸送方程式と非平衡エントロピー-場の量子論による非平衡統計力学-2008
- Author(s)
  北孝文
- Journal Title
  
  物性研究90 1-95
  
  Pages: 90-90
- NAID
  110006656099
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] "Quantum Transport Equation for Bloch Electrons in Electromagnetic Fields2008
- Author(s)
  T. Kita, H. Yamashita
- Journal Title
  
  Journal of the Physical Society of Japan 024711(1-9)
  
  Pages: 77-77
- NAID
  110006613902
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Conserving Gapless Mean-Field Theory of a Multi-Component Bose-Einstein Condensate2007
- Author(s)
  K. Kondo and T. Kita
- Journal Title
  
  Journal of the Physical Society of Japan 024008(1-8)
  
  Pages: 76-76
- NAID
  110006203511
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Entropy Change through Rayleigh-Benard Convective Transition with Rigid Boundaries2007
- Author(s)
  T. Kita
- Journal Title
  
  Journal of the Physical Society of Japan 76
- NAID
  110006342591
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Entropy Change through Rayleigh-Benard Convective Transition with Rigid Boundaries2007
- Author(s)
  T. Kita
- Journal Title
  
  Journal of the Physical Society of Japan 064006(1-4)
  
  Pages: 76-76
- NAID
  110006342591
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] "Conserving Gapless Mean-Field Theory for Weakly Interacting Bose Gases2006
- Author(s)
  T. Kita
- Journal Title
  
  Journal of the Physical Society of Japan 044603(1-16)
  
  Pages: 75-75
- NAID
  110004729266
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Uncommonly high upper critical field of the pylochlore superconductor KOs2O6below the enhanced paramagnetic limit2006
- Author(s)
  T. Shibauchi, L. Krusin-Elbaum, Y. Kasahara, Y. Shimono, Y. Matsuda, R. D. McDonald, C. H. Mielke, S. Yonezawa, Z. Hiroi, M. Arai, T. Kita, G. Blatter, and M. Sigrist
- Journal Title
  
  Physical Review 220506(1-4)
  
  Pages: 74-74
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Entropy in Nonequilibrium Statistical Mechanics2006
- Author(s)
  T. Kita
- Journal Title
  
  Journal of the Physical Society of Japan 114005(1-18)
  
  Pages: 75-75
- NAID
  110004852756
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Principle of Maximum Entropy Applied to Rayleigh-Benard Convection2006
- Author(s)
  T. Kita
- Journal Title
  
  Journal of the Physical Society of Japan 124005(1-11)
  
  Pages: 75-75
- NAID
  110005716681
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Conserving Gapless Mean-Field Theory for Weakly Interacting Bose Gases2006
- Author(s)
  T.Kita
- Journal Title
  
  Journal of the Physical Society of Japan 75
  
  Pages: 44603-44603
- NAID
  110004729266
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Entropy in Nonequilibrium Statistical Mechanics2006
- Author(s)
  T.Kita
- Journal Title
  
  Journal of the Physical Society of Japan 75
  
  Pages: 114005-114005
- NAID
  110004852756
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Principle of Maximum Entropy Applied to Rayleigh-Benard Convection2006
- Author(s)
  T.Kita
- Journal Title
  
  Journal of the Physical Society of Japan 75
  
  Pages: 124005-124005
- NAID
  110005716681
- Data Source
  KAKENHI-PROJECT-18540331
[Journal Article] Magnetic-Field Dependences of Thermodynamic Quantities in the Vortex State of Type-II Superconductors2005
- Author(s)
  Koichi WATANABE, Takafumi KITA, Masao ARAI
- Journal Title
  
  Physical Review B (in press)(To appear)
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Entropy and Spin Susceptibility of s-Wave Type-II Superconductors near H_<c2>.2004
- Author(s)
  Takafumi KITA
- Journal Title
  
  Physical Review B 69
  
  Pages: 144507-144507
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Theory of flux-flow resistivity near H_<c2> for s-wave type-II superconductors2004
- Author(s)
  T.Kita
- Journal Title
  
  J.Phys.Soc.Jpn. 73
  
  Pages: 21-24
- NAID
  110001954686
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Ab Initio Calculations of H_<c2> in Type-II Superconductors : Basic Formalism and Model Calculations.2004
- Author(s)
  Takafumi KITA, Masao ARAI
- Journal Title
  
  Physical Review B 70
  
  Pages: 224522-224522
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Theory of flux-flow resistivity near H_<c2> for s-wave type-II superconductors2004
- Author(s)
  T.Kita
- Journal Title
  
  Journal of the Physical Society of Japan 73
  
  Pages: 21-24
- NAID
  110001954686
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Ab Initio calculations of H_<c2> for Nb, NbSe_2, and MgB_22004
- Author(s)
  M.Arai, T.Kita
- Journal Title
  
  J.Phys.Soc.Jpn. 73
  
  Pages: 2924-2927
- NAID
  110001979231
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Entropy and spin susceptibility of s-wave type-II superconductors near H_<c2>2004
- Author(s)
  T.Kita
- Journal Title
  
  Phys.Rev.B 69
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Entropy and spin susceptibility of s-wave type-II superconductors near H_<c2>2004
- Author(s)
  T.Kita
- Journal Title
  
  Physical Review B 69
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Nonmagnetic Impurity Effects in MgB_22004
- Author(s)
  Koichi WATANABE, Takafumi KITA
- Journal Title
  
  Journal of the Physical Society of Japan 73
  
  Pages: 2239-2239
- NAID
  110001954961
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Ab Initio calculations of H_<c2> in type-II superconductors : basic formalism and model calculations2004
- Author(s)
  T.Kita, M.Arai
- Journal Title
  
  Phys.Rev.B 70
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Ab Initio Calculations of H_<c2> Nb, NbSe_2, and MgB_22004
- Author(s)
  Masao ARAI, Takafumi KITA
- Journal Title
  
  Journal of the Physical Society of Japan 73
  
  Pages: 2924-2924
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Nonmagnetic Impurity Effects in MgB_22004
- Author(s)
  K.Watanabe, T.Kita
- Journal Title
  
  J.Phys.Soc.Jpn. 73
  
  Pages: 2239-2244
- NAID
  110001954961
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Theory of Flux-Flow Resistivity near H_<c2> for s-Wave Type-II Superconductors2004
- Author(s)
  Takafumi KITA
- Journal Title
  
  Journal of the Physical Society of Japan 73
  
  Pages: 21-21
- NAID
  110001954686
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Calculation of κ_2(T) for s-wave type-II superconductors2003
- Author(s)
  T.Kita
- Journal Title
  
  Physical Review B 68
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Calculation of κ_2(T) for s-wave type-II superconductors2003
- Author(s)
  T.Kita
- Journal Title
  
  Phys.Rev.B 68
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Theory of the de Haas-van Alphen effect in type-II superconductors2002
- Author(s)
  K.Yasui, T.Kita
- Journal Title
  
  Physical Review B 66
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Spinor Bose-Einstein condensates with many vortices2002
- Author(s)
  T.Kita, T.Mizushima, K.Machida
- Journal Title
  
  Physical Review A 66
- NAID
  120000960512
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] On the density matrix of nonequilibrium steady-state statistical matrix2002
- Author(s)
  T.Kita
- Journal Title
  
  J.Phys.Soc.Jpn. 71
  
  Pages: 1795-1797
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Theory of the de Haas-van Alphen effect in type-II superconductors2002
- Author(s)
  K.Yasui, T.Kita
- Journal Title
  
  Phys.Rev.B 66
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Unconventional vortices and phase transitions in rapidly rotating superfluid ^3He2002
- Author(s)
  T.Kita
- Journal Title
  
  Physical Review B 66
- NAID
  120000955909
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] On the density matrix of nonequilibrium steady-state statistical matrix2002
- Author(s)
  T.Kita
- Journal Title
  
  Journal of the Physical Society of Japan 71
  
  Pages: 1795-1797
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Mermin-Ho vortex in ferromagnetic spinor Base-Einstein condensates2002
- Author(s)
  T.Mizushima, K.Machida, T.Kita
- Journal Title
  
  Phys.Rev.Let 89
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Spinor Base-Einstein condensates with many vortices2002
- Author(s)
  T.Kita, T.Mizushima, K.Machida
- Journal Title
  
  Phys.Rev.A 66
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Axisymmetric versus nonaxisymmetric vortices in spinor Bose-Einstein condensates2002
- Author(s)
  T.Mizushima, K.Machida, T.Kita
- Journal Title
  
  Physical Review A 66
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Axisymmetric versus nonaxisymmetric vortices in spinor Base-Einstein condensates2002
- Author(s)
  T.Mizushima, K.Machida, T.Kita
- Journal Title
  
  Phys.Rev.A 66
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Mermin-Ho vortex in ferromagnetic spinor Bose-Einstein condensates2002
- Author(s)
  T.Mizushima, K.Machida, T.Kita
- Journal Title
  
  Physical Review Letters 89
- NAID
  110009720218
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Unconventional vortices and phase transitions in rapidly rotating superfluid ^3He2002
- Author(s)
  T.Kita
- Journal Title
  
  Phys.Rev.B 66
- NAID
  120000955909
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Gauge invariance and Hall terms in the quasiclassical equations of superconductivity2001
- Author(s)
  T.Kita
- Journal Title
  
  Physical Review B 64
- NAID
  110002025901
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Gap anisotropy and de Haas-van Alphen effect in type-II superconductors2001
- Author(s)
  K.Yasui, T.Kita
- Journal Title
  
  J.Phys.Soc.Jpn. 70
  
  Pages: 2852-2855
- NAID
  10009121635
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Gauge in variance and Hall terms in the quasiclassical equations of superconductivity2001
- Author(s)
  T.Kita
- Journal Title
  
  Phys.Rev.B 64
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Vortex-lattice phases of superfluid ^3He in rapid rotation2001
- Author(s)
  T.Kita
- Journal Title
  
  Physical Review Letter 86
  
  Pages: 834-837
- NAID
  110002047500
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Vortex-lattice phases of superfluid ^3He in rapid rotation2001
- Author(s)
  T.Kita
- Journal Title
  
  Phys.Rev.Let 86
  
  Pages: 834-837
- NAID
  110002047500
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Journal Article] Gap anisotropy and de Haas-van Alphen effect in type-II superconductors2001
- Author(s)
  K.Yasui, T.Kita
- Journal Title
  
  Journal of the Physical Society of Japan 70
  
  Pages: 2852-2855
- NAID
  10009121635
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-13640341
[Presentation] ボーズ・アインシュタイン凝縮相の数値計算2013
- Author(s)
  筒井和政，北孝文
- Organizer
  日本物理学会2013年年次大会
- Place of Presentation
  広島大学 (東広島市)
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] BEC相の数値的研究2013
- Author(s)
  筒井和政、北孝文
- Organizer
  日本物理学会
- Place of Presentation
  広島大学
- Year and Date
  2013-03-28
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] Excitations in Bose-Einstein condensates revisited, Ninth International Conference on New Theories2012
- Author(s)
  T . Kita
- Organizer
  Discoveries and Applications of Superconductors and Related Materials
- Place of Presentation
  イタリア共和国フラスカ
- Year and Date
  2012-09-19
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] 自己無撞着摂動展開によるBEC転移の研究2012
- Author(s)
  筒井和政，北孝文
- Organizer
  日本物理学会2012年秋季大会
- Place of Presentation
  横浜国立大学 (横浜市)
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] Excitations in Bose-Einstein condensates revisited2012
- Author(s)
  Takafumi KITA
- Organizer
  Ninth International Conference on New Theories, Discoveries and Applications of Superconductors and Related Materials
- Place of Presentation
  Grand Hotel Villa Tuscolana (Italy)
- Invited
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] ボゴリュボフ・モードとHe のフォノン-ロトン曲線2012
- Author(s)
  北孝文
- Organizer
  日本物理学会
- Place of Presentation
  関西学院大学
- Year and Date
  2012-03-27
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] ボゴリュボフ・モードと^4Heのフォノン・ロトン曲線2012
- Author(s)
  北孝文
- Organizer
  日本物理学会
- Place of Presentation
  関西学院大学(西宮市)
- Year and Date
  2012-03-27
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] 自己無撞着摂動展開によるBEC転移の研究2012
- Author(s)
  筒井和政、北孝文
- Organizer
  日本物理学会
- Place of Presentation
  横浜国立大学
- Year and Date
  2012-09-18
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] FLEX近似の超伝導状態への拡張2011
- Author(s)
  北孝文
- Organizer
  日本物理学会
- Place of Presentation
  富山大学
- Year and Date
  2011-09-23
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] 場の量子論によるボーズ-アインシュタイン凝縮相の非平衡統計力学2011
- Author(s)
  北孝文
- Organizer
  基研研究会2011
- Place of Presentation
  京都大学
- Year and Date
  2011-08-19
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] FLEX近似の超伝導状態への拡張2011
- Author(s)
  北孝文
- Organizer
  日本物理学会
- Place of Presentation
  富山大学(富山市)
- Year and Date
  2011-09-23
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] 場の量子論によるボーズ・アインシュタイン凝縮相の非平衡統計力学2011
- Author(s)
  北孝文
- Organizer
  京大基研研究会「非平衡系の物理-ミクロとマクロの架け橋」
- Place of Presentation
  京都大学(京都市)
- Year and Date
  2011-08-19
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] A new self-consistent perturbation expansion for Bose-Einstein condensates satisfying conservation laws and Goldstone' ;s theorem2011
- Author(s)
  T.Kita
- Organizer
  American Physical Society March Meeting 2011
- Place of Presentation
  アメリカ合衆国テキサス州ダラス
- Year and Date
  2011-03-25
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] ボーズ-アインシュタイン凝縮理論の基礎を再考する2011
- Author(s)
  北孝文
- Organizer
  日本物理学会
- Place of Presentation
  富山大学
- Year and Date
  2011-09-22
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] ボーズ・アインシュタイン凝縮理論の基礎を再考する2011
- Author(s)
  北孝文
- Organizer
  日本物理学会
- Place of Presentation
  富山大学(富山市)
- Year and Date
  2011-09-22
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] A new self-consistent perturbation expansion for Bose-Einstein condensates satisfying conservation laws and Goldstone';s theorem2011
- Author(s)
  T. Kita
- Organizer
  APS March Meeting 2011
- Place of Presentation
  アメリカ合衆国テキサス州ダラス,ダラスコンベンションセンター
- Year and Date
  2011-03-25
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] BECにおけるGoldstoneの定理と南部-Goldstoneボゾンの性質2010
- Author(s)
  北孝文
- Organizer
  日本物理学会2010年秋の分科会
- Place of Presentation
  大阪府立大学
- Year and Date
  2010-09-25
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] BECにおけるGoldstoneの定理と南部-Goldstoneボゾンの性質2010
- Author(s)
  北孝文
- Organizer
  日本物理学会
- Place of Presentation
  大阪府立大学
- Year and Date
  2010-09-25
- Data Source
  KAKENHI-PROJECT-22540356
[Presentation] Nonequilibrium entropy : Can we defined it unambiguously?2009
- Author(s)
  T. Kita
- Organizer
  YIPQS International Molecule Workshop on 「Nonequilibrium quantum field theories and dynamic critical phenomena」
- Place of Presentation
  Kyoto University
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] 固体電子に対する量子輸送方程式の導出2009
- Author(s)
  山下博雅・北孝文
- Organizer
  日本物理学会
- Place of Presentation
  北海道大学
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] Conserving-Gapless理論による集団励起モードの計算2008
- Author(s)
  近藤佳之・北孝文・水島健
- Organizer
  日本物理学会
- Place of Presentation
  近畿大学
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] 超伝導電流に働くローレンツ力2008
- Author(s)
  北孝文
- Organizer
  第16回渦糸物理国内会議
- Place of Presentation
  東京工業大学
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] Conserving-Gapless理論による集団励起とその音波の解析2008
- Author(s)
  近藤佳之・北孝文・水島健
- Organizer
  日本物理学会
- Place of Presentation
  岩手大学
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] 非平衡統計力学におけるエントロピー最大原理2007
- Author(s)
  北孝文
- Organizer
  日本物理学会
- Place of Presentation
  鹿児島大学
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] エントロピー最大原理のレイリー・ベナール対流による検証2007
- Author(s)
  北孝文
- Organizer
  日本物理学会
- Place of Presentation
  鹿児島大学
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] トラップされたBose気体の熱力学特性-平均場理論による有限温度BECの解析2007
- Author(s)
  近藤佳之・北孝文
- Organizer
  日本物理学会
- Place of Presentation
  鹿児島大学
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] A Conserving Gapless Mean-Field Theory for Bose-Einstein Condensates2007
- Author(s)
  T. Kita
- Organizer
  Topology and Singularity in Optical Physics
- Place of Presentation
  Hokkaido University
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] 量子輸送方程式による非平衡統計力学2007
- Author(s)
  北孝文
- Organizer
  日本物理学会
- Place of Presentation
  北海道大学
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] 超伝導体の帯磁率とde Haas-van Alphen効果への周期ポテンシャルの影響2006
- Author(s)
  山下博雅・北孝文
- Organizer
  日本物理学会
- Place of Presentation
  千葉大学
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] 有限温度における一様ボーズ超流動体の準粒子スペクトルと集団励起モード2006
- Author(s)
  水島健・北孝文
- Organizer
  日本物理学会
- Place of Presentation
  千葉大学
- Data Source
  KAKENHI-PROJECT-18540331
[Presentation] 「非平衡統計力学におけるエントロピー最大原理2006
- Author(s)
  北孝文
- Organizer
  第14回渦糸物理国内会議
- Place of Presentation
  登別温泉ホテルまほろば会議場
- Data Source
  KAKENHI-PROJECT-18540331

1. KITA Takafumi (40222723)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
2. KUMAGAI Ken-ichi (70029560)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
3. KAWAMOTO Atsushi (60251691)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
4. FURUKAWA Yuji (50280863)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Kita Takafumi 北 孝文

北 孝文 キタ タカフミ

KITA Takafumi 北 孝文

Research Projects

Research Products

Co-Researchers

Theoretical Study of Anomalous Long-Range Correlations in Bose SuperfluidsPrincipal Investigator

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Theoretical study of Bose-Einstein condensates using a new self-consistent perturbation expansionPrincipal Investigator

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Quantitative calculations of response functions of materials andproperties of type-II superconductorsPrincipal Investigator

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NMR Study of peculiar electronic state in the vortex core of anisotrpic superconducttors

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Theoretical study on vortex states in superconductorsPrincipal Investigator

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渦糸状態の微視的解明をめざして-異方的超伝導体の理論的研究Principal Investigator

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時間反転対称性の破れた超伝導体の理論的研究Principal Investigator

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[Book] New Developments in Superconductivity Research (edited by R.W.Stevens)2003

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Total Pages

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Description

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[Journal Article] Fluctuation Exchange Approximation for Bose?Einstein Condensates2023

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DOI

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[Journal Article] How Infrared Singularities Affect Nambu-Goldstone Bosons at Finite Temperatures2023

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DOI

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[Journal Article] Legendre Transformation of the Luttinger-Ward Functional from the Bare Interaction Vertex to the Renormalized One2022

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[Journal Article] Quantum Field Theory of Correlated Bose?Einstein Condensates: I. Basic Formalism2021

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DOI

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[Journal Article] Quantum Field Theory of Correlated Bose?Einstein Condensates: II. Ward?Takahashi Identities and Correlation Functions2021

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Kita Takafumi 北孝文

北孝文キタタカフミ

KITA Takafumi 北孝文