Elias, V.Steele, T.Scadron, Michael D.Tarrach, R., 1948-2010-05-062010-05-0619860556-2821https://hdl.handle.net/2445/12433Quark-condensate contributions to m dyn , the quark mass generated by the dynamical breakdown of chiral symmetry, are shown to arise from only the first two terms of the operator-product expansion (OPE) for the appropriate O ( g 2 ) nonperturbative vacuum expectation value. Since the m | p | expansion parameter of the OPE is unity on the gauge-invariant p = m dyn propagator pole, such truncation of OPE contributions is an essential support to the calculation of m dyn .4 p.application/pdfeng(c) The American Physical Society, 1986Teoria de camps (Física)Partícules (Física nuclear)Field theory (Physics)Particles (Nuclear physics)info:eu-repo/semantics/article14186info:eu-repo/semantics/openAccess