論文

査読有り
2001年9月

Physical aspects of a naked singularity explosion: how does a naked singularity explode?

CLASSICAL AND QUANTUM GRAVITY
  • H Iguchi
  • ,
  • T Harada

18
17
開始ページ
3681
終了ページ
3699
記述言語
英語
掲載種別
研究論文(学術雑誌)
出版者・発行元
IOP PUBLISHING LTD

The behaviour of the quantum stress tensor for the scalar field on the classical background of a spherical dust collapse is studied. In previous works a diverging flux of quantum radiation was predicted. We use the exact expressions in a two-dimensional model formulated by Barve et al (1998 Phys. Rev. D 58 104018). Our present results show that the backreaction does not become important during the semiclassical phase. The appearance of the naked singularity would not be affected by this quantum field radiation. To predict whether or not explosion of the naked singularity occurs, we need a theory of quantum gravity. We depict the generation of a diverging flux inside the collapsing star. The quantum energy is gathered around the centre positively. This would be converted into a diverging flux along the Cauchy horizon. The ingoing negative flux crosses the Cauchy horizon. The intensity of it is divergent only at the central naked singularity. This diverging negative ingoing flux is balanced with the outgoing positive diverging flux which propagates along the Cauchy horizon. After replacement of the naked singularity by a practical high-density region, the instantaneous diverging radiation would change to a milder one with finite duration.


リンク情報
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000172022100022&DestApp=WOS_CPL
ID情報
  • ISSN : 0264-9381
  • Web of Science ID : WOS:000172022100022

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