A Model of Black Hole Evaporation and 4D Weyl Anomaly
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.
- Publication:
-
Universe
- Pub Date:
- June 2017
- DOI:
- 10.3390/universe3020051
- arXiv:
- arXiv:1701.03455
- Bibcode:
- 2017Univ....3...51K
- Keywords:
-
- black hole evaporation;
- self-consistent model;
- Weyl anomaly;
- High Energy Physics - Theory;
- Astrophysics - High Energy Astrophysical Phenomena;
- General Relativity and Quantum Cosmology
- E-Print:
- 28 pages, 6 figures. Typos fixed and references added