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Shifman, M.A.; Vainshtein, A.I.; Zakharov, V.I.
Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Moscow. Inst. Teoreticheskoj i Ehksperimental'noj Fiziki1979
Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Moscow. Inst. Teoreticheskoj i Ehksperimental'noj Fiziki1979
AbstractAbstract
[en] The effects of the large-scale vacuum fluctuations on instantons of a small size rho are considered in the framework of QCD. The instanton density with the account of gluon vacuum condensate is found. It is shown that the instanton gas approximation fails at unexpectedly small rho. The instanton interaction with the gluon condensate becomes strong already at rho approximately (1.1 GeV)-1. The absolute bound for the use of quasiclassical methods lies at rho approximately (0.5 GeV)-1
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1979; 16 p; 14 refs.
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