Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-06-22
Physics
High Energy Physics
High Energy Physics - Phenomenology
Talk presented at 2nd Internat.Conf.on Perspectives in Hadronic Physics, Trieste,Italy,10-14 May,1999, 10 pages,latex2e, docum
Scientific paper
In this talk we discuss an improvement of the Diakonov-Petrov QCD Effective Action. We propose the Improved Effective Action, which is derived on the basis of the Lee-Bardeen results for the quark determinant in the instanton field. The Improved Effective Action provides proper account of the current quark masses, which is particularly important for strange quarks. This Action is successfully tested by the calculations of the quark condensate, the masses of the pseudoscalar meson octet and by axial-anomaly low-energy theorems.
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