Background-free propagation in loop quantum gravity

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I review the definition of n-point functions in loop quantum gravity, discussing what has been done and what are the main open issues. Particular attention is dedicated to gauge aspects and renormalization.
Invited contribution to a special issue of Advanced Science Letters edited by Martin Bojowald. 14 pages. v2 minor corrections

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General Relativity and Quantum Cosmology, High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/174484

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0810.1978
 http://arxiv.org/abs/0810.1978

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arXiv