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hep-ph2003
Chiral Symmetry and Resonances
J. E. Ribeiro
A review on the requirements of chiral symmetry on effective quark models is presented. The connection between the pion Salpeter amplitude and the mass gap equation is discussed. H…
hep-ph1996
The solution to the strong CP problem at the BCS level of chiral rotations
P. Bicudo, J. Ribeiro
We briefly review the cases of forced and spontaneous chiral symmetry breaking. In particular the chiral condensate of q anti-q pairs is parametrized with two angles, phi which mea…