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Loop quantum gravity : an outside view.

Nicolai, H. and Peeters, K. and Zamaklar, M. (2005) 'Loop quantum gravity : an outside view.', Classical and quantum gravity., 22 (19). pp. 193-247.

Abstract

We review aspects of loop quantum gravity in a pedagogical manner, with the aim of enabling a precise but critical assessment of its achievements so far. We emphasize that the off-shell ('strong') closure of the constraint algebra is a crucial test of quantum spacetime covariance, and thereby of the consistency, of the theory. Special attention is paid to the appearance of a large number of ambiguities, in particular in the formulation of the Hamiltonian constraint. Developing suitable approximation methods to establish a connection with classical gravity on the one hand, and with the physics of elementary particles on the other, remains a major challenge.

Item Type:Article
Full text:Full text not available from this repository.
Publisher Web site:http://dx.doi.org/10.1088/0264-9381/22/19/R01
Record Created:27 Apr 2007
Last Modified:29 Apr 2009 14:42

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