Bibcode
                                    
                            Crane, Louis; Perez, Alejandro; Rovelli, Carlo
    Bibliographical reference
                                    eprint arXiv:gr-qc/0104057
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                        4
            
                        2001
            
  Citations
                                    41
                            Refereed citations
                                    29
                            Description
                                    We show that the normalized Lorentzian state sum is finite on any
triangulation. It thus provides a candidate for a perturbatively finite
quantum theory of general relativity in four dimensions with Lorentzian
signature.