312 citations · 588 across the 12 of their papers we have counts for
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gr-qc1997
The notions of time and evolution in quantum cosmology
R. Parentani
We re-examine the notions of time and evolution in the light of the mathematical properties of the solutions of the Wheeler-DeWitt equation which are revealed by an extended adiaba…
gr-qc1997
The validity of the Background Field Approximation
R. Parentani
In the absence of a tractable theory of quantum gravity, quantum matter field effects have been so far computed by treating gravity at the Background Field Approximation. The princ…