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

INFLUENCE ON SPACETIME STRUCTURE OF QUANTUM BACK REACTION

Research Project

Project/Area Number 06640367
Research Category

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

Allocation TypeSingle-year Grants
Research Field 素粒子・核・宇宙線
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

YOSHIMURA Motohiko  TOHOKU UNIVERSITY,PHYSICS,PROFESSOR, 大学院理学研究科, 教授 (70108447)

Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1995: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1994: ¥800,000 (Direct Cost: ¥800,000)
KeywordsBLACK HOLE / HAWKING RADIATION / INFLATION / REHEATING / POLONYI PROBLEM / PARAMETRIC RESONANCE / GRAVITINO / PARTICLE PRODUCTION / ホーキング輻射 / 再過熱問題 / パラメーター共鳴 / ブラックホール時空 / インフレーション宇宙 / 曲った時空の場の量子論 / ブラックホールの蒸発 / 情報の損失問題
Research Abstract

Firstly, evaporation of the black hole due to Hawking radiation has been investigated in models that extract most essential features of the black hole geometry ; existence of the event horizon. By taking either a two dimensional dilaton gravity or the moving mirror model that mimics essence of the Hawking radiation, it was shown that the black hole can completely disappear without furthere radiation, but leaving behind stable remnants. In the second project the problem of coherent field oscillation accompanying particle production has been studied. The behavior of the quantum system described by bose quantum fields coupling to the classical oscillator field was shown to be analyzed vigorously by using a functional Schrodinger picture. The short time average over a few oscillation periods exhibits particle production taking place in infinitely many band regions in the parameter space of the particle wave number and the oscillation amplitude, known as the band of parametric resonance. Accordingly the navive estimate due to the perturbative Born rate is grossly wrong for an initial large amplitude oscillation. This has important effects hitherto ignored on the reheating problem after inflation and the Polonyi problem in supergravity models ; inflation may end with intermediate epoch of much higher temperatures that realizes readily the GUT baryogenesis at the same time suppressing production of gravitino required by successful nucleosynthesis.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] M.HOTTA,M.YOSHIMURA: "END POINT OF HAWKING EVAPORATION-CASE OF INTEGRABLE MODEL" MOD.PMYS.LETT A. 9. 1617-1626 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.HOTTA,M.SHINO M.YOSHIMURA: "MOVING MIRROR MODEL OF HAWKING EVAPORATION" PROGR.THEOR.PHYS.91. 839-869 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.YOSHIMURA: "CATASTROPMIC PARTKLE PRODUCTION UNDER PERIODIC PERTUPBATION" PROOR.THEOR.PHYS.94. 873-898 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.YOSHIMURA: "PARTICLE PRODUCTION AND INFLATON DECAY" PROCEEDINGS OF SYMP.“THE COSMOLOGICAL CONSTANT AND THE EVOLUTION OF THE UNIVERSE". 149-154 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.HOTTA,M.YOSHIMURA: ""END POINT OF HAWKING EVAPORATION_CASE OF INTEGRABLE MODE_"" MOD.PHYS.LETTA. 9. 1617-1626 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.HOTTA,M.SHINO,M.TOSHIMURA: ""MOVING MIRROR MODEL OF HAWKING EVAPORATION"" PROGR.THEOR.PHYS. 91. 839-869 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.YOSHIMURA: ""CATASTROPHIC PARTICLE PRODUCTION UNDER PERIODIC PERTORBATION"" PROGR.THEOR.PHYS. 94. 873-898 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M. HOTTA, M. YOSHIMURA: "END POINT OF HAWKING EVAPORATION-CASE OF INTEGRABLE MODEL" MOD. PMYS. LETT. A. 9. 1617-1626 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] M. HOTTA, M. SHINO, M. YOSHIMURA: "MOVING MIRROR MODEL OF HAWKING EVAPORATION" PROGR, THEOR, PHYS.91. 839-869 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] M. YOSHIMURA: "CATASTROPHIC PARTICLE PRODUCTION UNDER PERIODIC PERTURBATION" PROGR, THEOR, PHYS.94. 873-898 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M. YOSHIMURA: "PARTICLE PRODUCTION AND INFLATON DECAY" PROCEEDINGS OF SYMP, ″THE COSMOLOGICAL CONSTANT AND THE EVOLUTION OF THE UNIVERSE″. (印刷中).

    • Related Report
      1995 Annual Research Report
  • [Publications] M.HOTTA,AND M.SHINO,M.YOSHIMURA: "MOVING MIRROR MODEL OF HAWKING EVAPORATION" PROGRESS OF THEDRETICAL PMYSICS. 91. 839-869 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] M.HOTTA,M.YOSHIMURA: "END POINT OF HAWKING EVAPORATION-CASE OF INTEGRABLE MODEL" MODERN PMYYSICS LETTERSA. 9. 1617-1626 (1994)

    • Related Report
      1994 Annual Research Report

URL: 

Published: 1994-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi