Compares two chiral decompositions in Heisenberg sigma model for consistency with background field method and computes one- and two-loop renormalization effects.
Nguyen, Quantization of the nonlinear sigma model revisited , J
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On background fields and a cutoff in sigma models
Compares two chiral decompositions in Heisenberg sigma model for consistency with background field method and computes one- and two-loop renormalization effects.