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A Ponzano-Regge model of Lorentzian 3-Dimensional gravity

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arxiv gr-qc/0102098 v1 pith:ANWJ6A5F submitted 2001-02-22 gr-qc

Laurent Freidel This is my paper · ORCID
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keywords lorentziandimensionalgravitymodelcaseconstructionfunctiongeneralize
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We present the construction of the partition function of 3-dimensional gravity in the Lorentzian regime as a state sum model over a triangulation. This generalize the work of Ponzano and Regge to the case of Lorentzian signature.

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  1. (2+1) Lorentzian quantum cosmology from spin-foams: opportunities and obstacles for semi-classicality

    gr-qc 2024-11 conditional novelty 6.0 of 10

    A 2+1 Lorentzian spin-foam cosmology model with a Hessian-derived measure and a massive scalar field yields convergent partition functions, with semi-classical expectation values only in the causally regular sector an...

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