A Model of Black Hole Evaporation and 4D Weyl Anomaly

  title={A Model of Black Hole Evaporation and 4D Weyl Anomaly},
  author={Hikaru Kawai and Yuki Yokokura},
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… 

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