Notes on black-hole evaporation

  title={Notes on black-hole evaporation},
  author={W. G. Unruh},
  journal={Physical Review D},
  • W. Unruh
  • Published 15 August 1976
  • Physics
  • Physical Review D
This paper examines various aspects of black-hole evaporation. A two-dimensional model is investigated where it is shown that using fermion-boson cancellation on the stress-energy tensor reduces the energy outflow to zero, while other noncovariant techniques give the Hawking result. A technique for replacing the collapse by boundary conditions on the past horizon is developed which retains the essential features of the collapse while eliminating some of the difficulties. This set of boundary… 

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