Boundary terms in the Barrett-Crane spin foam model and consistent gluing
arXiv:gr-qc/0201077 · doi:10.1016/S0370-2693(02)01559-9
Abstract
We extend the lattice gauge theory-type derivation of the Barrett-Crane spin foam model for quantum gravity to other choices of boundary conditions, resulting in different boundary terms, and re-analyze the gluing of 4-simplices in this context. This provides a consistency check of the previous derivation. Moreover we study and discuss some possible alternatives and variations that can be made to it and the resulting models.
10 pages, 2 figures, revtex; v2: typos in some formulas corrected, version appeared in journal
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Cited by in corpus (17)
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