Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-07-26
Phys.Lett. B368 (1996) 221-229; Erratum-ibid. B378 (1996) 385-386
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, two figures added, minor changes
Scientific paper
10.1016/0370-2693(95)01503-5
A new zero modes enhancement (ZME) model of the true QCD vacuum is breifly described. It makes possible to analytically investigate and calculate numerically low-energy QCD structure from first principles. Expressions of basic chiral QCD parameters (the pion decay constant, the quark and gluon condensates, the dynamically generated quark mass, etc) as well as the vacuum energy density (up to the sign, by definition, the bag constant), suitable for numerical calculations, have been derived. Solution to the Schwinger-Dyson (SD) equation for the quark propagator in the infrared (IR) domain on the basis of the ZME effect in QCD was used for this purpose. There are only two independent quantities (free parameters) by means of which calculations must be done within our approach. The first one is the integration constant of the above mentioned quark SD equation of motion. The second one is a scale at which nonperturbative effects begin to play a dominant role.
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