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Eta' Mass and Chiral Symmetry Breaking at Large Nc and Nf

L. Girlanda·J. Stern·P. Talavera
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Abstract

We propose a method for implementing the large-Nc, large-Nf limit of QCD at the effective Lagrangian level. Depending on the value of the ratio Nf/Nc, different patterns of chiral symmetry breaking can arise, leading in particular to different behaviors of the eta-prime mass in the combined large-N limit.

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L. Girlanda, J. Stern, P. Talavera. 2001-03-20. Eta' Mass and Chiral Symmetry Breaking at Large Nc and Nf. https://doi.org/10.1103/physrevlett.86.5858

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