Loop-quantum-gravity application of L0 monoidal-category theory. A spin network Γ is a trivalent graph whose edges carry half-integer SU(2) irreducible representations j and whose vertices carry invariant intertwiners; its evaluation ⟨Γ⟩…
Loop-quantum-gravity application of L0 monoidal-category theory. A spin network Γ is a trivalent graph whose edges carry half-integer SU(2) irreducible representations j and whose vertices carry invariant intertwiners; its evaluation ⟨Γ⟩…