1993 Fiscal Year Final Research Report Summary

BEYOND THE STANDARD MODEL AND COSMOLOGY

Research Project

Project/Area Number	03640257
Research Category	Grant-in-Aid for General Scientific Research (C)
Allocation Type	Single-year Grants
Research Field	核・宇宙線・素粒子
Research Institution	TOHOKU UNIVERSITY
Principal Investigator	YOSHIMURA Tomohiko Tohoku Univ. Fac. of sciences, Professor, 理学部, 教授 (70108447)
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
Project Period (FY)	1991 – 1993
Keywords	GRAND UNIFICATION / BLACK HOLE / HAWKING RADIATION
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.

(6 results)