Phys. Rev. D 31, 3256–3267 (1985)Nambu–Jona-Lasinio–type effective Lagrangian: Anomalies and nonlinear Lagrangian of low-energy, large-N QCDReceived 18 December 1984; published in the issue dated 15 June 1985 We present a qualitative derivation of the chiral model from QCD. This is based on using a Nambu–Jona-Lasinio–type effective Lagrangian as an intermediate step. A detailed derivation of the anomalous low-energy Wess-Zumino term is presented. This includes vector, axial-vector, and pseudoscalar particles. The low-energy scale is set by H¯∼〈Ψ¯Ψ〉. We also present the low-energy nonlinear chiral model which generalizes the Skyrme model. The possibility of soliton solutions is indicated. There is a possible application of these ideas to electroweak theory. © 1985 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.31.3256
DOI:
10.1103/PhysRevD.31.3256
PACS:
12.35.Cn, 11.10.Ef, 11.30.Qc, 11.30.Rd
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