Predictions from quantum cosmology.

  title={Predictions from quantum cosmology.},
  journal={Physical review letters},
  volume={74 6},
  • Vilenkin
  • Published 6 June 1994
  • Physics
  • Physical review letters
If the cosmological evolution is followed back in time, we come to the initial singularity where the classical equations of general relativity break down. This led many people to believe that in order to understand what actually happened at the origin of the universe, we should treat the universe quantum-mechanically and describe it by a wave function rather than by a classical spacetime. This quantum approach to cosmology was initiated by DeWitt [1] and Misner [2], and after a somewhat slow… 
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