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Current Algebra of Classical Non-Linear Sigma Models

M. Forger, J. Laartz, U. Schaeper

hep-tharXiv:hep-th/9201025

Abstract

The current algebra of classical non-linear sigma models on arbitrary Riemannian manifolds is analyzed. It is found that introducing, in addition to the Noether current jμ associated with the global symmetry of the theory, a composite scalar field j, the algebra closes under Poisson brackets.

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