Classical equations for quantum systems.

  title={Classical equations for quantum systems.},
  author={Gell-Mann and Hartle},
  journal={Physical review. D, Particles and fields},
  volume={47 8},
  • Gell-Mann, Hartle
  • Published 21 October 1992
  • Physics
  • Physical review. D, Particles and fields
The origin of the phenomenological deterministic laws that approximately govern the quasiclassical domain of familiar experience is considered in the context of the quantum mechanics of closed systems such as the universe as a whole. A formulation of quantum mechanics is used that predicts probabilities for the individual members of a set of alternative coarse-grained histories that decohere, which means that there is negligible quantum interference between the individual histories in the set… 

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