Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2006-12-26
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
4 pages. MG11 conference proceedings
Scientific paper
The Ponzano-Regge model of three-dimensional quantum gravity is well-defined
when the observables satisfy a certain condition involving the twisted
cohomology. In this case, the partition function is defined in terms of the
Reidemeister torsion. Some consequences for the special cases of planar graphs
and knots are given.
Barrett John W.
Naish-Guzman Ileana
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