General Relativity and Gravitation

, Volume 15, Issue 12, pp 1139–1147 | Cite as

Black holes and the nature of quantum gravity

  • Frank J. Tipler
Research Articles

Abstract

Hawking and Wald have recently argued that the process of quantum black hole evaporation requires the violation of the fundamental physical law which asserts that the time evolution of quantum states is governed by unitary operators. I show this violation can be avoided by a change in the global boundary conditions. It is remotely possible that astronomical observation could establish whether or not the universe has these boundary conditions in which quantum mechanical time evolution is governed by unitary operators.

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Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • Frank J. Tipler
    • 1
    • 2
  1. 1.Department of Mathematics and Department of PhysicsTulane UniversityNew Orleans
  2. 2.Department of AstronomyUniversity of California at BerkeleyBerkeley

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