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arXiv · 1012.4784

Quantum deformation of two four-dimensional spin foam models

Winston J. Fairbairn·Catherine Meusburger
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Abstract

We construct the q-deformed version of two four-dimensional spin foam models, the Euclidean and Lorentzian versions of the EPRL model. The q-deformed models are based on the representation theory of two copies of U_q(su(2)) at a root of unity and on the quantum Lorentz group with a real deformation parameter. For both models we give a definition of the quantum EPRL intertwiners, study their convergence and braiding properties and construct an amplitude for the four-simplexes. We find that both of the resulting models are convergent.

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Winston J. Fairbairn, Catherine Meusburger. 2012-02-05. Quantum deformation of two four-dimensional spin foam models. https://doi.org/10.1063/1.3675898

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