Quantum Effect and Curvature Strength of Naked Singularities(Astrophysics and Relativity)

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概要

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• There are many solutions to the Einstein field equations that demonstrate naked singularity (NS) formation after regular evolution. It is possible, however, that such a quantum effect as particle creation prevents NSs from forming. We investigate the relation between the curvature strength and the quantum effects of NSs in a very wide class of spherical dust collapse. Through a perturbative calculation, we find that if the NS is very strong, the quantum particle creation diverges as the Cauchy horizon is approached, while if the NS is very weak, the creation should be finite. In the context of cosmic censorship, strong NSs will be subjected to the backreaction of quantum effects and may disappear or be hidden behind horizons, while weak NSs will not.

• 2005-03-25

著者

• Harada Tomohiro

  Rikkyo Univ. Tokyo Jpn

• Maeda Hideki

  Advanced Research Institute For Science And Engineering Waseda University

• Miyamoto Umpei

  Department Of Physics Waseda University

• HARADA Tomohiro

  Astronomy Unit, School of Mathematical Sciences, Queen Mary, University of London

• Harada Tomohiro

  Astronomy Unit School Of Mathematical Sciences Queen Mary University Of London

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• Quantum Effect and Curvature Strength of Naked Singularities(Astrophysics and Relativity)
• A-12: Kink Instability and Stabilization of the Friedmann Universe(Part II: Poster Contributions, The Next Chapter in Einstein's Legacy)

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