• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2010 Fiscal Year Final Research Report

Quantum Probability Theory and Infinite Dimensional Analysis

Research Project

  • PDF
Project/Area Number 20340025
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Basic analysis
Research InstitutionTohoku University

Principal Investigator

OBATA Nobuaki  東北大学, 大学院・情報科学研究科, 教授 (10169360)

Co-Investigator(Kenkyū-buntansha) HIAI Fumio  東北大学, 大学院・情報科学研究科, 教授 (30092571)
URAKAWA Hajime  東北大学, 国際教育院, 教授 (50022679)
SUZUKI Kanako  東北大学, 国際高等研究教育機構, 助教 (10451519)
Co-Investigator(Renkei-kenkyūsha) LIANG Song  筑波大学, 大学院・数理物質科学研究科, 准教授 (60324399)
HORA Akihito  名古屋大学, 多元数理科学研究科, 教授 (10212200)
SAITO Kimiaki  名城大学, 理工学部, 教授 (90195983)
HOROSHIMA Fumio  九州大学, 大学院・数理学研究院, 准教授 (00330358)
YOSHIDA Hiroaki  お茶の水女子大学, 大学院・人間文化創成科学研究科, 教授 (10220667)
Project Period (FY) 2008 – 2010
Keywords量子確率論 / ホワイトノイズ解析 / 無限次元解析 / 複雑ネットワーク / 直交多項式 / 確率解析 / フーリエ-ガウス変換 / 量子中心極限定理
Research Abstract

We investigated mathematical models of random phenomena by revealing and utilizing non-commutative structures hidden behind. We introduced the new concept of quantum white noise derivative and applied to generalization of quantum stochastic integrals, integral representation of Fock space operators, representation of quantum martingales, and characterization of Bogoliubov transformation. For the structural analysis of complex networks, we developed the quantum probabilistic approach to spectral analysis and transition probability of random walks, and studied free probability, free entropy, and matrix inequalities.

  • Research Products

    (51 results)

All 2011 2010 2009 2008 Other

All Journal Article (24 results) (of which Peer Reviewed: 24 results) Presentation (24 results) Book (2 results) Remarks (1 results)

  • [Journal Article] Implementation problem for the canonical commutation relation in terms of quantum white noise derivatives2010

    • Author(s)
      U. C. Ji and N. Obata
    • Journal Title

      J. Math. Phys.

      Volume: 51 Pages: 173-187

    • Peer Reviewed
  • [Journal Article] Spectral properties of the threshold network model2010

    • Author(s)
      Y. Ide, N. Konno and N. Obata
    • Journal Title

      Internet Math.

      Volume: 6 Pages: 173-187

    • Peer Reviewed
  • [Journal Article] Markov product of positive definite kernels and applications to Q-matrices of graph products2010

    • Author(s)
      N. Obata
    • Journal Title

      Colloq. Math.

      Volume: 122 Pages: 177-184

    • Peer Reviewed
  • [Journal Article] A new approach to mutual information. II2010

    • Author(s)
      F. Hiai
    • Journal Title

      Banach Center Publications

      Volume: 89 Pages: 143-163

    • Peer Reviewed
  • [Journal Article] Strongly subadditive functions2010

    • Author(s)
      K. Audenaert, F. Hiai and D. Petz
    • Journal Title

      Acta Math. Hungar

      Volume: 128 Pages: 386-394

    • Peer Reviewed
  • [Journal Article] matrix monotone functions, matrix means, and majorization, Interdiscip2010

    • Author(s)
      F. Hiai
    • Journal Title

      Inform. Sci.

      Volume: 16 Pages: 139-246

    • Peer Reviewed
  • [Journal Article] Affine Weyl groups and the boundary value eigenvalue problems of the Laplacian, Interdiscip2010

    • Author(s)
      Y. Hoshikawa and H. Urakawa
    • Journal Title

      Inform. Sci.

      Volume: 16 Pages: 93-109

    • Peer Reviewed
  • [Journal Article] Spikes and diffusion waves in a one-dimensional model of chemotaxis2010

    • Author(s)
      G. Karch and K. Suzuki
    • Journal Title

      Nonlinearity

      Volume: 23 Pages: 3119-3137

    • Peer Reviewed
  • [Journal Article] Annihilation-derivative, creation-derivative and representation of quantum martingales2009

    • Author(s)
      U. C. Ji and N. Obata
    • Journal Title

      Math. Phys.

      Volume: 286 Pages: 751-775

    • Peer Reviewed
  • [Journal Article] Quantum stochastic integral representations of Fock space operators2009

    • Author(s)
      U. C. Ji and N. Obata
    • Journal Title

      Stochastics

      Volume: 81 Pages: 367-384

    • Peer Reviewed
  • [Journal Article] Quantum stochastic gradient2009

    • Author(s)
      U. C. Ji and N. Obata
    • Journal Title

      Interdisciplinary Information Sciences

      Volume: 15 Pages: 345-359

    • Peer Reviewed
  • [Journal Article] Quantum hypothesis testing with group symmetry2009

    • Author(s)
      F. Hiai, M. Mosonyi and M. Hayashi
    • Journal Title

      J. Math. Phys.

      Volume: 50 Pages: 103304, 31

    • Peer Reviewed
  • [Journal Article] Monotonicity for entry wise functions of matrices2009

    • Author(s)
      F. Hiai
    • Journal Title

      Linear Algebra Appl

      Volume: 431 Pages: 1125-1146

    • Peer Reviewed
  • [Journal Article] A log-Sobolev type inequality for free entropy of two projections2009

    • Author(s)
      F. Hiai and Y. Ueda
    • Journal Title

      Ann. Inst. Henri Poincare Probab. Stat

      Volume: 45 Pages: 239-249

    • Peer Reviewed
  • [Journal Article] Orbital approach to microstate free entropy2009

    • Author(s)
      F. Hiai, T. Miyamoto and Y. Ueda
    • Journal Title

      Internat. J. Math

      Volume: 20 Pages: 227-273

    • Peer Reviewed
  • [Journal Article] Convergence rates to optimal distribution of the Boltzmann machine on simulated annealing2009

    • Author(s)
      H. Urakawa
    • Journal Title

      Interdiscip. Inform. Sci

      Volume: 15 Pages: 291-299

    • Peer Reviewed
  • [Journal Article] Generalized white noise operator fields and quantum white noise derivatives2008

    • Author(s)
      U. C. Ji and N. Obata
    • Journal Title

      Seminaires et Congres

      Volume: 16 Pages: 17-33

    • Peer Reviewed
  • [Journal Article] Asymptotic spectral analysis of growing regular graphs2008

    • Author(s)
      A. Hora and N. Obata
    • Journal Title

      Trans. Amer. Math. Soc

      Volume: 360 Pages: 899-923

    • Peer Reviewed
  • [Journal Article] Notions of independence in quantum probability and spectral analysis of graphs2008

    • Author(s)
      N. Obata
    • Journal Title

      Amer. Math. Soc. Transl

      Volume: 223 Pages: 115-136

    • Peer Reviewed
  • [Journal Article] Error exponents in hypothesis testing for correlated states on a spin chain2008

    • Author(s)
      F. Hiai, M. Mosonyi and T. Ogawa
    • Journal Title

      J. Math. Phys.

      Volume: 49 Pages: 032112, 22

    • Peer Reviewed
  • [Journal Article] Notes on microstate free entropy of projections2008

    • Author(s)
      F. Hiai and Y. Ueda
    • Journal Title

      Publ. Res. Inst. Math. Sci

      Volume: 44 Pages: 49-89

    • Peer Reviewed
  • [Journal Article] Free energy density for mean field perturbation of states of a one-dimensional spin chain2008

    • Author(s)
      F. Hiai, M. Mosonyi, H. Ohno and D. Petz
    • Journal Title

      Rev. Math. Phys

      Volume: 20 Pages: 335-365

    • Peer Reviewed
  • [Journal Article] One-mode interacting Fock spaces and random walks on graphs

    • Author(s)
      N. Obata
    • Journal Title

      Stochastics

      Volume: (in press)

    • Peer Reviewed
  • [Journal Article] On the role of basic production terms in an activator-inhibitor system modeling biological pattern formation

    • Author(s)
      K. Suzuki and I. Takagi
    • Journal Title

      Funkcialaj Ekvacioj

      Volume: (in press)

    • Peer Reviewed
  • [Presentation] Generalizing Minkowski's determinantal inequality2011

    • Author(s)
      F. Hiai
    • Organizer
      International Conference Product Systems and Independence in Quantum Dynamics
    • Place of Presentation
      Greifswald, Germany
    • Year and Date
      20110314-18
  • [Presentation] Convexity of quasi-entropy type functions : Lieb's and Ando's convexity theorems revisited2011

    • Author(s)
      F. Hiai
    • Organizer
      The 6th Jikji Workshop : Infinite Dimensional Analysis and Quantum Probability
    • Place of Presentation
      Daejeon, Korea
    • Year and Date
      20110108-12
  • [Presentation] Existence and behavior of solutions to aggregation equations2011

    • Author(s)
      K. Suzuki
    • Organizer
      The 6th Jikji Workshop : Infinite Dimensional Analysis and Quantum Probability
    • Place of Presentation
      Daejeon, Korea
    • Year and Date
      2011-01-11
  • [Presentation] Join of one-mode interacting Fock spaces and applications to random walks2011

    • Author(s)
      N. Obata
    • Organizer
      The 6th Jikji Workshop on Infinite Dimensional Analysis and Quantum Probability
    • Place of Presentation
      Daejeon, Korea
    • Year and Date
      2011-01-10
  • [Presentation] Deformed vacuum states and Q-matrices of graphs2010

    • Author(s)
      N. Obata
    • Organizer
      Symposium on Analysis and Probability 2010
    • Place of Presentation
      Taipei, Taiwan
    • Year and Date
      20100810-12
  • [Presentation] Riemannian metrics on positive definite matrices related to means2010

    • Author(s)
      F. Hiai
    • Organizer
      Information Geometry and its Applications III
    • Place of Presentation
      Leipzig, Germany
    • Year and Date
      20100802-06
  • [Presentation] Quantum probabilistic aspect to random walks on graphs2010

    • Author(s)
      N. Obata
    • Organizer
      13th Workshop on Noncommutative Harmonic Analysis
    • Place of Presentation
      Bedlewo, Poland
    • Year and Date
      20100711-17
  • [Presentation] Some New Aspects of Bogoliubov Transformations from Quantum White Noise Calculus2010

    • Author(s)
      N. Obata
    • Organizer
      5th Jikji Workshop on Infinite Dimensional Analysis and Quantum Probability
    • Place of Presentation
      Cheongju, Korea
    • Year and Date
      20100106-08
  • [Presentation] Join of one-mode interacting Fock spaces and applications2010

    • Author(s)
      N. Obata
    • Organizer
      10th Sendai Workshop on Infinite Dimensional Analysis and Quantum Probability
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      2010-12-17
  • [Presentation] Patterns of the shadow system with nontrivial basic production terms2010

    • Author(s)
      K. Suzuki
    • Organizer
      Concentration and Related Topics on Nonlinear Problems
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      2010-11-22
  • [Presentation] Steady-state patterns of the shadow system with nontrivial basic production terms2010

    • Author(s)
      K. Suzuki
    • Organizer
      Partial Differential Equations in Mathematical Biology
    • Place of Presentation
      Bedlewo, Poland
    • Year and Date
      2010-09-13
  • [Presentation] Spikes and diffusion waves in one-dimensional model of chemotaxis2010

    • Author(s)
      K. Suzuki
    • Organizer
      Nonlocal operators and partial differential equations
    • Place of Presentation
      Bedlewo, Poland
    • Year and Date
      2010-06-29
  • [Presentation] Quantum white noise derivatives and applications2009

    • Author(s)
      N. Obata
    • Organizer
      International Conference on Stochastic Analysis and Applications
    • Place of Presentation
      Hammamet, Tunisia
    • Year and Date
      20091012-17
  • [Presentation] Quantum white noise calculus : Quantum white noise derivatives and applications2009

    • Author(s)
      N. Obata
    • Organizer
      12th Workshop on Noncommutative Harmonic Analysis with Applications to Probability
    • Place of Presentation
      Bedlewo, Poland
    • Year and Date
      20090816-22
  • [Presentation] Riemannian metrics on positive definite matrices related to means2009

    • Author(s)
      F. Hiai
    • Organizer
      12th Workshop on Noncommutative Harmonic Analysis with Applications to Probability
    • Place of Presentation
      Bedlewo, Poland
    • Year and Date
      20090816-22
  • [Presentation] Geometry of biharmonic maps, Conference of harmonic maps-in honor of Professor2009

    • Author(s)
      H. Urakawa
    • Organizer
      J. Wood's sixtieth birthday
    • Place of Presentation
      Cagliari, Italy
    • Year and Date
      2009-09-08
  • [Presentation] Recent developments in quantum white noise calculus : Quantum white noise derivatives and implementation problem2009

    • Author(s)
      N. Obata
    • Organizer
      2009 NIMS Hot Topics Workshop on Infinite Dimensional Analysis and Related Topics
    • Place of Presentation
      Daejeon, Korea
    • Year and Date
      2009-06-22
  • [Presentation] Spectral analysis of random complex networks2009

    • Author(s)
      N. Obata
    • Organizer
      The 3rd Cheongju Workshop on Infinite Dimensional Analysis and Quantum Probability
    • Place of Presentation
      Cheongju, Korea
    • Year and Date
      2009-01-12
  • [Presentation] Orbital approach to free entropy and free pressure2008

    • Author(s)
      F. Hiai
    • Organizer
      2008 Global Korean Mathematical Society International Conference
    • Place of Presentation
      Jeju, Korea
    • Year and Date
      20081023-25
  • [Presentation] Mutual information and mutual pressure2008

    • Author(s)
      F. Hiai
    • Organizer
      Conference on Information and Communication
    • Place of Presentation
      Budapest, Hungary
    • Year and Date
      20080825-28
  • [Presentation] Pressure and its Legendre transform in microstate free entropy2008

    • Author(s)
      F. Hiai
    • Organizer
      11th Workshop"Non-commutative Harmonic Analysis with Applications to Probability"
    • Place of Presentation
      Bedlewo, Poland
    • Year and Date
      20080817-23
  • [Presentation] Conformal Geometry, Harmonic Maps and Biharmonic Maps2008

    • Author(s)
      H. Urakawa
    • Organizer
      International Conference of Conformal Geometry-Invariant Theory and Variational Method
    • Place of Presentation
      Roscoff, France
    • Year and Date
      20080630-0704
  • [Presentation] Recent developments in quantum white noise theory : Stochastic integrals and transformations2008

    • Author(s)
      N. Obata
    • Organizer
      29th Conference on Quantum Probability and Related Topics
    • Place of Presentation
      Hammamet, Tunisia
    • Year and Date
      2008-10-13
  • [Presentation] Quantum probabilistic approach to spectral analysis of growing graphs2008

    • Author(s)
      N. Obata
    • Organizer
      Korea Operator Theory and Its Applications Conference (KOTAC 2008)
    • Place of Presentation
      Seoul, Korea
    • Year and Date
      2008-06-19
  • [Book] Stochastics on Stochastic Analysis, A special issue of Stochastics2009

    • Author(s)
      N. El Karoui, P. Malliavin, G. Di Nunno, N. Obata, B. Oksendal and H. Ouerdiane
    • Publisher
      国際会議プロシーディングス共同編集
  • [Book] New trends in infinite dimensional analysis and quantum probability2009

    • Author(s)
      N. Obata, F. Hiai, M. Bo. ejko and U. C. Ji
    • Publisher
      special issue, Interdiscip. Inform. Sci.
  • [Remarks]

    • URL

      http://www.math.is.tohoku.ac.jp/~obata/

URL: 

Published: 2013-07-31  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi