Reduction of Vector and Axial--Vector Fields in a Bosonized Nambu--Jona--Lasinio Model
A. A. Bel'kov, A. V. Lanyov, A. Schaale
Abstract
We derive the effective action for pseudoscalar mesons by integrating out vector and axial--vector collective fields in the generating functional of the bosonized NJL--model. The corresponding modifications of the nonlinear effective Lagrangian and the bosonized currents, arising at O(p4), are discussed.
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