Optimized-Variational Quark Mass Expansion and Dynamical Chiral Symmetry Breakdown
Abstract
Description
A recently proposed variational mass expansion approach to dynamical chiral symmetry breakdown is reviewed. We briefly explain how a specific integral ansatz over the analytically continued, arbitrary Lagrangian mass parameter, resums the usual variational mass expansion (``delta-expansion".) The construction is then generalized to obtain non-perturbative expressions for the order parameters of the $SU(n_f)_L \times SU(n_f)_R$ breakdown ($n_f =$ 2 or 3), in QCD. Emphasis is put on some general aspects as well as possible limitations of this approach.
5 pages, LaTex, using stwol.sty, no figures. Talk given at the 28th ICHEP, 25-31 July 1996, Warsaw, Poland, to appear in the proceedings
5 pages, LaTex, using stwol.sty, no figures. Talk given at the 28th ICHEP, 25-31 July 1996, Warsaw, Poland, to appear in the proceedings