1993 Fiscal Year Final Research Report Summary
BEYOND THE STANDARD MODEL AND COSMOLOGY
| Project/Area Number |
03640257
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
核・宇宙線・素粒子
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| Research Institution | TOHOKU UNIVERSITY |
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Principal Investigator |
YOSHIMURA Tomohiko Tohoku Univ. Fac. of sciences, Professor, 理学部, 教授 (70108447)
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| Co-Investigator(Kenkyū-buntansha) |
日笠 健一 東北大学, 理学部, 助教授 (20208739)
柳田 勉 東北大学, 理学部, 教授 (10125677)
HIKASA K
YOSHIMURA M
YANAGIDDA T
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| Project Period (FY) |
1991 – 1993
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| Keywords | GRAND UNIFICATION / BLACK HOLE / HAWKING RADIATION |
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| Research Abstract |
THIS YEAR BLACK HOLE EVAPORATION DUE'TO HAWKING RADIATION HAS BEEN MAINLY STUDIED.
IT IS WELL KNOWN THAT BLACK HOLE SPACETIME ENDOWED WITH EVENT HORIZON ADMITS PARTICLE PRODUCTION WITH THERMAL SPECTRUM.IF THIS PROCESS CONTINUES UNTIL COMPLETE EVAPORTION OF COLLAPSED OBJECT, THERE IS A DANGER OF PURE QUANTUM STATE EVOLVING INTO A MIXED THERMAL STATE : A CLEAR SIGNAL OF VIOLATION OF QUANTUM MECHANICAL LAW.TO SOLVE THIS FOUNDAMENTAL PROBLEM IT IS HOWEVER NECESSARY TO TREAT THE BACK REACTION PROPERLY.
IN THIS INVESTIGATION A SIMPLIFIED APPROACH BASED ON A TRUNCATED DEGREE OF FREEDOM WAS TAKEN.MAIN RESULTS ARE ; TWO DIMENSINAL CLASSICAL COLLAPSE MODE WAS CONSTRUCTED : HAWKING RADIATION IN THE SEMICLASSICAL APPROXIMATION : ANALYSIS OF END POINT BEHAVIOR WITH BACK REACTION IN CLUDED, IN A PARTICULAR MODEL.
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