Toward Convergence of the Variational Mass Expansive in Asymptotically Free Theories Auteur(s): Kneur J.-L., Reynaud D.
Conference: HIGH ENERGY PHYSICS ICHEP 2000 (Osaka, JP, 2000-07-27) Ref HAL: hal-00308160_v1 Exporter : BibTex | endNote Résumé: We re-examine a modification of perturbative expansions, valid for asymptotically free theories, producing variationally improved expansion of physical quantities relevant to dynamical (chiral) symmetry breaking. The large order behaviour of this expansion is shown to be drastically improved, for reasons analogous to the convergence properties of the delta-expansion of the anharmonic oscillator. |