Relational Observables in Gravity: a Review

Relational Observables in Gravity: a Review

We present an overview on relational observables in gravity mainly from a loop quantum gravity perspective. The gauge group of general relativity is the diffeomorphism group of the underlying manifold. Consequently, general relativity is a totally constrained theory with vanishing canonical Hamilton...

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Bibliographic Details
Main Author: Johannes Tambornino
Format: Article
Language:English
Published: National Academy of Science of Ukraine 2012-03-01
Series:Symmetry, Integrability and Geometry: Methods and Applications
Subjects:
Dirac observables
quantum gravity
problem of time
gauge invariance
Online Access:http://dx.doi.org/10.3842/SIGMA.2012.017

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