Observation of Incipient Black Holes and the Information Loss Problem

@article{Vachaspati2007ObservationOI,
  title={Observation of Incipient Black Holes and the Information Loss Problem},
  author={Tanmay Vachaspati and Dejan Stojkovi{\'c} and Lawrence Krauss},
  journal={Physical Review D},
  year={2007},
  volume={76},
  pages={024005}
}
We study the formation of black holes by spherical domain wall collapse as seen by an asymptotic observer, using the functional Schrodinger formalism. To explore what signals such observers will see, we study radiation of a scalar quantum field in the collapsing domain wall background. The total energy flux radiated diverges when backreaction of the radiation on the collapsing wall is ignored, and the domain wall is seen by the asymptotic observer to evaporate by nonthermal "pre-Hawking… 
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