An introduction to quantum gravity

  title={An introduction to quantum gravity},
  author={Bryce S. Dewitt and Giampiero Esposito},
  journal={International Journal of Geometric Methods in Modern Physics},
  • B. Dewitt, G. Esposito
  • Published 15 November 2007
  • Physics
  • International Journal of Geometric Methods in Modern Physics
Quantum gravity was born as that branch of modern theoretical physics that tries to unify its guiding principles, i.e., quantum mechanics and general relativity. Nowadays it is providing new insight into the unification of all fundamental interactions, while giving rise to new developments in mathematics. The various competing theories, e.g. string theory and loop quantum gravity, have still to be checked against observations. We review the classical and quantum foundations necessary to study… 
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