Effects of Screening of the Instantons in Nonperturbative QCD

Details Effects of Screening of the Instantons in Nonperturbative QCD Effects of Screening of the Instantons in Nonperturbative QCD

1998-03-05

arxiv.org/abs/hep-ph/9803252v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, LaTeX 2.09

Scientific paper

The gluon fields screening in the stochastic vacuum of gluodynamics is studied. The effective action is derived for the instanton interacting with nonperturbative fields. Quantum nonperturbative effects are shown to affect greatly the shape of instanton. The power asymptotics x^{-2} of the classical "instanton's profile function" at large distances is replaced due to yhese effects by Airy function asymptotics x^{-1/4} exp(-const\cdot x^{3/2}).

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