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Quantum Electrodynamics in Strong External Fields

Research Project

Project/Area Number 62540211
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 核・宇宙線・素粒子
Research InstitutionTokyo Metropolitan University

Principal Investigator

MINAKATA Hisakazu  Department of Physics, Tokyo Metropolitan University, 理学部, 助手 (00112475)

Co-Investigator(Kenkyū-buntansha) 白石 郁美  北里大学, 教養部, 助手
S.HIRATA Yumi  Institute of Physics, College of Liberal Arts and Science, Kitasato University
平田 郁美  北里大学, 教養部, 助手
Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1988: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1987: ¥900,000 (Direct Cost: ¥900,000)
KeywordsQED / Bosonization / Supercritical phase / 電子雲の振動モード / 超強電場 / ソリトン・反ソリトン対発生
Research Abstract

Based on a new formulation of QED the physics around a hypothetical highly charged nucleus is investigated. Our formalism describes QED in terms of Bose variables and the electron appears as a topological soliton. At Z <greater than or equal> Z_c<similar or equal> 170 the vacuum undergoes the phase transition from the normal to the supercritical ground states. The structure of this transition is elucidated as a first-order phase transition. That is, the process is described as grow of the bubble of the true ground state in the false vacuum. The latent heat is carried away by the bubble wall which is nothing but the spontaneously produced positrons. The ground state of the supercritical vacuum is shown to have a soliton-like structure. The excitations on it is analyzed within the small-fluctuation approximation. New charge-neutral metastable excitations are found. Their energies weakly depend onand takes stable values - 1.6 MeV around the terminate point beyond which the states cease to exist. Near the terminate point the widths of the states are 1 - 10 keV, which are sufficiently narrow to explain GSI e^+e^- peak structure.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Yumi Hirata.;Kisakazu Minakata.: Physical Review D. 35. 2619-2621 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yumi Hirata;Kisakazu Minakata.: Physical Review D(Rapid Communications). 36. 652-655 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] H.Minakata.;H.Nunokawa.;K.Shiraishi.;H.Suzuki.: Modern Physics Letters A. 2. 827-834 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 南方久和: 日本物理学会誌. 42. 847-849 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] H.Minakata.;H.Nunokawa.;K.Shiraishi.: Physical Review D. 38. 694-697 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] H.Minakata.;H.Nunokawa.: Physical Review D. 38. 3605-3609 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yumi Hirata; Hisakazu Minakata: "Hydrogenlike Atom in Bosonized QED" Physical Review D. 35. 2619-2621 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yumi Hirata; Hisakazu Minakata: "Soliton-Antisoliton Pair Creation in Strong External Fields" Physical Review D (Rapid Communications). 36. 652-655 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] H. Minakata; H. Nunokawa; K. Shiraishi; H. Suzuki: "Neutrinos from Supernova Explosion and the Mikheyev-Smirnov- Wolfenstein Effect" Modern Physics Letters A. 2. 827-834 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hisakazu Minakata, Hiroshi Nunokawa, and Kiyoshi Shiraishi: "Neutrinos from SN1987A and the C1 Experiment at the Homestake Mine" Physical Review D. 38. 694-697 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hisakazu Minakata and Hiroshi Nunokawa: "Neutrino Flavor Conversion in Supernova 1987A" Physical Review D. 38. 3605-3609 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yumi Hirata,;Hisakazu Minakata: Physical Review D. 35. 2619-2621 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] Yumi Hirata,;Hisakazu Minakata: Physical Review D(Rapid Communications). 36. 652-655 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] H.Minakata,;H.Nunokawa,;K.Shiraishi,;H.Suzuki: Modern Physics Letters A. 2. 827-834 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] 南方久和: 日本物理学会誌. 42. 847-849 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] H.Minakata,;H.Munokawa,;K.Shiraishi: Physical Reveiw D. 38. 694-697 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] H.Minakata.;H.Nunokawa: Physical Review D. 38. 3605-3609 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Yumi Hirata and Hisakazu Minakata: Physical Review D. 35. 2619-2621 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Yumi Hirata and Hisakazu Minakata: Physical Review D. 36. 652-655 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] H. Minakata;H. Nunokawa;K. Shiraishi and H. Suzuki: Modern Physics Letters A. 2. 827-834 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 南方久和: 日本物理学会誌. 42. 847-849 (1987)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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