%0 Conference Proceedings
%T Toward convergence of the variational mass expansion in asymptotically free theories
%+ Laboratoire de Physique Mathématique et Théorique (PMT)
%A Kneur, Jean-Loïc
%A Reynaud, D
%< avec comité de lecture
%Z L2C:01-004
%( HIGH ENERGY PHYSICS, VOLS I AND II
%B 30th International Conference on High Energy Physics
%C OSAKA, Japan
%I WORLD SCIENTIFIC PUBL CO INC, 687 HARTWELL ST, TEANECK, NJ 07666 USA
%P 1344-1346
%8 2000-07-27
%D 2000
%K OPTIMIZED DELTA-EXPANSION
%K CONNECTED VACUUM AMPLITUDE
%K CHIRAL-SYMMETRY BREAKING
%K ORDER DEPENDENT MAPPINGS
%K ANHARMONIC-OSCILLATOR
%K PERTURBATION-THEORY
%K SERIES
%K PROOF
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Conference papers
%X We re-examine a modification of perturbative expansions, valid for asymptotically free theories, producing "variationally improved" expansions 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.
%G English
%L hal-00703764
%U https://hal.science/hal-00703764
%~ CNRS
%~ UNIV-MONTP2
%~ UNIV-MONTPELLIER
%~ UM1-UM2