Chiral symmetry breaking beyond BCS and theorem on the width of scalars
arXiv:0804.4675 · doi:10.1063/1.2973527
Abstract
We review chiral symmetry breaking at the BCS level, in the framework of chiral invariant quark models and in the Schwinger-Dyson formalism. We revisit the pi mass problem beyond the BCS level. We show a theorem on the masses, on the widths and on the q qbar content of the scalar mesons sigma and f0.
6 pages, talk presented at SCADRON 70, Workshop on Scalar Mesons and Related Topics, February 2008, Lisbon