Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1995-03-27
J.Math.Phys.36:6494-6509,1995
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
24 pages, TeX, Mar 95; contribution to the JMP special issue on "Quantum geometry and diffeomorphism invariant quantum field t
Scientific paper
10.1063/1.531253
We review and systematize recent attempts to canonically quantize general relativity in 2+1 dimensions, defined on space-times $\R\times\Sigma^g$, where $\Sigma^g$ is a compact Riemann surface of genus $g$. The emphasis is on quantizations of the classical connection formulation, which use Wilson loops as their basic observables, but also results from the ADM formulation are summarized. We evaluate the progress and discuss the possible quantum (in)equivalence of the various approaches.
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