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Universe 2017, 3(2), 51;

A Model of Black Hole Evaporation and 4D Weyl Anomaly

Department of Physics, Kyoto University, Kitashirakawa, Kyoto 606-8502, Japan
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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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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Kawai, H.; Yokokura, Y. A Model of Black Hole Evaporation and 4D Weyl Anomaly. Universe 2017, 3, 51.

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