A Note on B-observables in Ponzano-Regge 3d Quantum Gravity
arXiv:0808.0025 · doi:10.1088/0264-9381/26/3/035013
Abstract
We study the insertion and value of metric observables in the (discrete) path integral formulation of the Ponzano-Regge spinfoam model for 3d quantum gravity. In particular, we discuss the length spectrum and the relation between insertion of such B-observables and gauge fixing in the path integral.
17 pages
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