PIRSA:08120046

Video URL

https://pirsa.org/08120046

Loop quantum gravity vertex for spin foam gravity

Pereira, R. (2008). Loop quantum gravity vertex for spin foam gravity. Perimeter Institute for Theoretical Physics. https://pirsa.org/08120046

Pereira, Roberto. Loop quantum gravity vertex for spin foam gravity. Perimeter Institute for Theoretical Physics, Dec. 12, 2008, https://pirsa.org/08120046 

          @misc{ scivideos_PIRSA:08120046,
            doi = {10.48660/08120046},
            url = {https://pirsa.org/08120046},
            author = {Pereira, Roberto},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Loop quantum gravity vertex for spin foam gravity},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2008},
            month = {dec},
            note = {PIRSA:08120046 see, \url{https://scivideos.org/index.php/pirsa/08120046}}
          }

Roberto Pereira Aix-Marseille University

Talk numberPIRSA:08120046
DOI10.48660/08120046
Source RepositoryPIRSA
Collection
Talk Type Conference
Subject

Abstract

New spin foam models for gravity have been recently proposed to deal with the shortcomings of the Barrett-Crane model. In particular, they draw a closer connection between the Loop Quantum Gravity and the Spin Foam approaches to non perturbative quantum gravity. In this talk, I will present the construction for the case of Lorentzian signature and finite Immirzi parameter. An area operator can be defined and its spectrum agrees with the one defined in LQG. Finally, the amplitude is shown to be finite after a suitable regularization.