Quantum , higher - spin , local charges in symmetric space sigma models
نویسندگان
چکیده
Potential anomalies are analysed for the local spin-3 and spin-4 classically conserved currents in any two-dimensional sigma model on a compact symmetric space G/H, with G and H classical groups. Quantum local conserved charges are shown to exist in exactly those models which also possess quantum non-local (Yangian) charges. The possibility of larger sets of quantum local charges is discussed and shown to be consistent with known S-matrix results and the behaviour of the corresponding Yangian representations.
منابع مشابه
Non - local charges and quantum integrability of sigma models on the symmetric spaces
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