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Quantum KZ equations : ウィキペディア英語版 | Quantum KZ equations In mathematical physics, the quantum KZ equations or quantum Knizhnik–Zamolodchikov equations or qKZ equations are the analogue for quantum affine algebras of the Knizhnik–Zamolodchikov equations for affine Kac–Moody algebras. They are a consistent system of difference equations satisfied by the ''N''-point functions, the vacuum expectations of products of primary fields. In the limit as the deformation parameter ''q'' approaches 1, the ''N''-point functions of the quantum affine algebra tend to those of the affine Kac–Moody algebra and the difference equations become partial differential equations. The quantum KZ equations have been used to study exactly solved models in quantum statistical mechanics. ==See also==
*Quantum affine algebras *Yang–Baxter equation *Quantum group *Hecke algebra *Kac–Moody algebra *Conformal field theory
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