Multi angle The essential role of coherent states in quantum gravity
Auteurs : Rovelli, Carlo (Auteur de la Conférence)
CIRM (Editeur )
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Résumé : Conventional quantum field theory techniques do not work for extracting physical information from a background-independent quantum theory of gravity. A technique that works is Oeckl's boundary formalism, with semiclassical coherent states on the boundary. I illustrate how this technique has allowed us to compute the lifetime of a black hole in loop quantum gravity. This is an astrophysical relevant quantity that could have observational consequences.Codes MSC :
83C45 - Quantization of the gravitational field
83C47 - Methods of quantum field theory in general relativity
83C57 - Black holes