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Universe 2017, 3(2), 51; doi:10.3390/universe3020051

A Model of Black Hole Evaporation and 4D Weyl Anomaly

1
Department of Physics, Kyoto University, Kitashirakawa, Kyoto 606-8502, Japan
2
iTHES Research Group, RIKEN, Wako, Saitama 351-0198, Japan
*
Author to whom correspondence should be addressed.
Received: 19 May 2017 / Revised: 12 June 2017 / Accepted: 12 June 2017 / Published: 16 June 2017
(This article belongs to the Collection Open Questions in Black Hole Physics)
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Abstract

We analyze the time evolution of a spherically-symmetric collapsing matter from the point of view that black holes evaporate by nature. We consider conformal matters and solve the semi-classical Einstein equation G μ ν = 8 π G T μ ν by using the four-dimensional Weyl anomaly with a large c coefficient. Here, T μ ν contains the contribution from both the collapsing matter and Hawking radiation. The solution indicates that the collapsing matter forms a dense object and evaporates without horizon or singularity, and it has a surface, but looks like an ordinary black hole from the outside. Any object we recognize as a black hole should be such an object. View Full-Text
Keywords: black hole evaporation; self-consistent model; Weyl anomaly black hole evaporation; self-consistent model; Weyl anomaly
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kawai, H.; Yokokura, Y. A Model of Black Hole Evaporation and 4D Weyl Anomaly. Universe 2017, 3, 51.

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