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q-Deformed spin foam models of quantum gravity

Authors
  • Khavkine, Igor
  • Christensen, J. Daniel
Type
Published Article
Publication Date
Apr 02, 2007
Submission Date
Apr 02, 2007
Identifiers
DOI: 10.1088/0264-9381/24/13/009
Source
arXiv
License
Unknown
External links

Abstract

We numerically study Barrett-Crane models of Riemannian quantum gravity. We have extended the existing numerical techniques to handle q-deformed models and arbitrary space-time triangulations. We present and interpret expectation values of a few selected observables for each model, including a spin-spin correlation function which gives insight into the behaviour of the models. We find the surprising result that, as the deformation parameter q goes to 1 through roots of unity, the limit is discontinuous.

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