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2012 Fiscal Year Final Research Report

SPECTRALANALYSISOFQUANTUMHAMILTONIANSATTHRESHODENERGIES

Research Project

  • PDF
Project/Area Number 21540193
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Basic analysis
Research InstitutionUniversity of Hyogo

Principal Investigator

UMEDA Tomio  兵庫県立大学, 大学院・物質理学研究科, 教授 (20160319)

Co-Investigator(Renkei-kenkyūsha) IWASAKI Chisato  兵庫県立大学, 大学院・物質理学研究科, 教授 (30028261)
HOSHIRO Toshihiko  兵庫県立大学, 大学院・物質理学研究科, 教授 (40211544)
FUJIIE Setsuro  兵庫県立大学, 大学院・物質理学研究科, 准教授 (00238536)
Project Period (FY) 2009 – 2012
Keywords関数方程式 / スペクトル理論 / 固有関数
Research Abstract

We investigated mathematical properties of energies of Dirac operators, which play fundamental roles in quantum mechanics, describing states of tiny particles like atoms. We found a few of new mathematical phenomena on threshold energies which are considered to be clues in theoretical explanations of the electron-positron pair creation. We also found an infinite series of functions, which play significant roles in the theoretical treatments of stability of matter. In addition, we discovered a mathematical phenomenon in connection with some important inequalities and with some important functions at threshold energies.

  • Research Products

    (10 results)

All 2012 2011 2010 2009 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (5 results) Remarks (1 results)

  • [Journal Article] A sequence of zero modes of Weyl-Dirac operators and an associated sequence of solvable polynomials2012

    • Author(s)
      Yoshimi Saito,Tomio Umeda
    • Journal Title

      Operator Theory: Advances and Applications

      Volume: Vol.219 Pages: 197-209

    • URL

      http://de.arxiv.org/pdf/1101.3133.pdf

    • Peer Reviewed
  • [Journal Article] Eigen-functions at the threshold energies of magnetic Dirac operators2011

    • Author(s)
      Yoshimi Saito, Tomio Umeda
    • Journal Title

      Reviews in Mathematical Physics

      Volume: Vol.23 Pages: 155-178

    • URL

      http://de.arxiv.org/pdf/0905.0961.pdf

    • Peer Reviewed
  • [Journal Article] Threshold eigenfunctions and threshold resonances of some relativistic operators2011

    • Author(s)
      Yoshimi Saito, Tomio Umeda
    • Journal Title

      Physics, Chemistry, Mathematics

      Volume: Vol.2 Pages: 1-8

    • Peer Reviewed
  • [Journal Article] The Dirac-Hardy and Dirac-Sobolev inequalities in L^12011

    • Author(s)
      Alexander Balinsky, W. Desmond Evans, Tomio Umeda
    • Journal Title

      Publications of Research Institute for Mathematical Sciences, Kyoto Univ.

      Volume: Vol.47 Pages: 791-801

    • URL

      http://de.arxiv.org/pdf/1101.3129.pdf

    • Peer Reviewed
  • [Presentation] Low energy spectral and scattering theory for relativistic Schroedinger operators2012

    • Author(s)
      楳田登美男
    • Organizer
      Workshop "New developments in relativistic mechanics and applications"
    • Place of Presentation
      ケンブリッジ大学ニュートン研究所(イギリス)
    • Year and Date
      2012-08-01
  • [Presentation] 磁場のディラック作用素の閾値エネルギーにおける固有関数と共鳴状態2012

    • Author(s)
      楳田登美男
    • Organizer
      日本数学会
    • Place of Presentation
      東京理科大学神楽坂キャンパス
    • Year and Date
      2012-03-29
  • [Presentation] Threshold eigenfunctions and resonances for some relativistic operators2011

    • Author(s)
      楳田登美男
    • Organizer
      Conference "Operator theory & boundary value problems"
    • Place of Presentation
      パリ大学オルセー校(フランス)
    • Year and Date
      2011-05-27
  • [Presentation] Threshold eigenfunctions and resonances for some quantum Hamiltonians2010

    • Author(s)
      楳田登美男
    • Organizer
      第8回 AIMS International Conference on Dynamical Systems, Differential Equations and Applications
    • Place of Presentation
      ドレスデン工科大学(ドイツ)
    • Year and Date
      2010-05-25
  • [Presentation] Eigenfunctions at the threshold energies of magnetic Dirac operators2009

    • Author(s)
      楳田登美男
    • Organizer
      第7回 International ISAAC Congress
    • Place of Presentation
      インペリアル・カレッジ(イギリス)
    • Year and Date
      2009-07-14
  • [Remarks]

    • URL

      http://www.sci.u-hyogo.ac.jp/material/math/umeda-j.html

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Published: 2014-08-29  

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