# Quantum gravity: general introduction and recent developments

@article{Kiefer2006QuantumGG, title={Quantum gravity: general introduction and recent developments}, author={Claus Kiefer}, journal={Annalen der Physik}, year={2006}, volume={15} }

I briefly review the current status of quantum gravity. After giving some general motivations for the need of such a theory, I discuss the main approaches in quantizing general relativity: Covariant approaches (perturbation theory, effective theory, and path integrals) and canonical approaches (quantum geometrodynamics, loop quantum gravity). I then address quantum gravitational aspects of string theory. This is followed by a discussion of black holes and quantum cosmology. I end with some…

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