Abstract
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 know S-matrix results and the behaviour of the corresponding yangian representations.
Original language | English |
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Article number | 020 |
Number of pages | 17 |
Journal | Journal of High Energy Physics |
Volume | 2005 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 2005 |
Keywords
- field theories in lower dimensions
- sigma models
- integrable field theories
- YANG-BAXTER EQUATION
- NONLOCAL CHARGES
- PARTICLE-PRODUCTION
- DIMENSIONAL MODELS
- CONSERVATION-LAWS
- FIELD-THEORY
- S-MATRICES
- ALGEBRAS
- REPRESENTATIONS
- INTEGRABILITY