Effects of Screening of the Instantons in Nonperturbative QCD

1998/03/05 by N. O. Agasian, Agasian, N. O.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9803252

11 pages, LaTeX 2.09

arxiv created 1998/03/05 · openalex publication_date 1998/03/05 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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⋅ x^3/2).

Related

• Instanton Screening in the Nonperturbative Gluodynamics
• Instanton in the nonperturbative QCD vacuum
• Probing the Boundary of the Non-Perturbative QCD by Small Size Instantons
• The Influence of Instantons on the Quark Propagator
• Gluons, light and heavy quarks and their interactions in the instanton vacuum