Quantum gravitational fluctuations and the semi-classical limit

Details Quantum gravitational fluctuations and the semi-classical limit Quantum gravitational fluctuations and the semi-classical limit

1998-10-22

arxiv.org/abs/gr-qc/9810073v3

Int.J.Mod.Phys.D9:511-529,2000

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX, 15 pages, no figures

Scientific paper

10.1142/S0218271800000517

An attempt is made to go beyond the standard semi-classical approximation for gravity in the Born-Oppenheimer decomposition of the wave-function in minisuperspace. New terms are included which correspond to quantum gravitational fluctuations on the background metric. Their existence renders the definition of the semi-classical limit rather delicate and can lead to the avoidance of the singularities the classical theory predicts in cosmology and in the gravitational collapse of compact objects.

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