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A categorical construction of 4D TQFTs

Louis Crane, David N. Yetter

hep-tharXiv:hep-th/9301062

Abstract

We construct a four dimensional topological Quantum Field Theory from a modular tensor category. We complete the proof in the case of SU(2)q at a root of unity. Our construction may be important in the physical interpretation of the Chern Simons state in the Ashtekar variables.

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