Note on off-shell relations in nonlinear sigma model
arXiv:1412.3722
Abstract
In this note, we investigate relations between tree-level off-shell currents in nonlinear sigma model. Under Cayley parametrization, all odd-point currents vanish. We propose and prove a generalized identity for even-point currents. The off-shell identity given in [1] is a special case of the generalized identity studied in this note. The on-shell limit of this identity is equivalent with the on-shell KK relation. Thus this relation provides the full off-shell correspondence of tree-level KK relation in nonlinear sigma model.
28 pages, 1 table, 11 figures, improved version
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