Ref HAL: hal-00520869_v1
Ref Arxiv: 1009.4475
DOI: 10.1016/j.physrep.2011.05.002
WoS: 000295430400001
Ref. & Cit.: NASA ADS
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28 Citations
Résumé:

This is a review of the present status of loop and spin foam approaches to quantization of four-dimensional general relativity. It aims at raising various issues which seem to challenge some of the methods and the results often taken as granted in these domains. A particular emphasis is given to the issue of diffeomorphism and local Lorentz symmetries at the quantum level and to the discussion of new spin foam models. We also describe modifications of these two approaches which may overcome their problems and speculate on other promising research directions.

Commentaires: 75 pages