Quantum, higher-spin, local charges in symmetric space sigma models

J M Evans, D Kagan, C A S Young, N J MacKay

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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 languageEnglish
Article number020
Number of pages17
JournalJournal of High Energy Physics
Volume2005
Issue number1
DOIs
Publication statusPublished - 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

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