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A note on B-observables in Ponzano–Regge 3D quantum gravity

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Published 16 January 2009 • 2009 IOP Publishing Ltd
, , Citation Etera R Livine and James P Ryan 2009 Class. Quantum Grav. 26 035013 DOI 10.1088/0264-9381/26/3/035013

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1 Laboratoire de Physique, ENS Lyon, CNRS UMR 5672, 46 Allée d'Italie, 69007 Lyon, France

2 Perimeter Institute, 31 Caroline St. N., Waterloo, ON N2L 2Y5, Canada

Dates

  1. Received 8 September 2008
  2. Published

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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.

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