Gauge Fixing and the Semiclassical Interpretation of Quantum Cosmology

  title={Gauge Fixing and the Semiclassical Interpretation of Quantum Cosmology},
  author={Leonardo Chataignier},
  journal={Zeitschrift f{\"u}r Naturforschung A},
  pages={1069 - 1098}
Abstract We make a critical review of the semiclassical interpretation of quantum cosmology and emphasise that it is not necessary to consider that a concept of time emerges only when the gravitational field is (semi)classical. We show that the usual results of the semiclassical interpretation and its generalisation known as the Born–Oppenheimer approach to quantum cosmology can be obtained by gauge fixing, both at the classical and quantum levels. By “gauge fixing,” we mean a particular choice… Expand
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