Loop quantum gravity is a theory that results from the canonical quantization of general relativity. A covariant (path integral) formulation of the theory is expected to be in the form of a spin foam model, such as the Barrett-Crane model. Spin networks are diagrams which provide a basis for the Hilbert spaces of these theories. They also describe representation-theoretic computations that are used in computing amplitudes. This page is a collection of links to information about loop quantum gravity, spin foams, and spin networks, with some focus on parts relevant for extracting predictions from the theory.
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