Multi-Instanton Effects in QCD Sum Rules for the Pion

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dc.creatorDorokhov, A. E.
dc.creatorEsaibegyan, S. V.
dc.creatorKochelev, N. I.
dc.creatorStefanis, N. G.
dc.date1996-01-17
dc.date.accessioned2026-07-07T10:58:41Z
dc.date.available2026-07-07T10:58:41Z
dc.descriptionMulti-instanton contributions to QCD sum rules for the pion are investigated within a framework which models the QCD vacuum as an instanton liquid. It is shown that in singular gauge the sum of planar diagrams in leading order of the $1/N_{c}$ expansion provides similar results as the effective single-instanton contribution. These effects are also analysed in regular gauge. Our findings confirm that at large distances the correlator functions are more adequately described in the singular gauge rather than in the regular one.
dc.description11 pages RevTeX is used
dc.identifierhttps://arxiv.org/abs/hep-th/9601086
dc.identifierhttp://arxiv.org/abs/hep-th/9601086
dc.identifierJ.Phys.G23:643-649,1997
dc.identifierdoi:10.1088/0954-3899/23/6/003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187189
dc.subjectHigh Energy Physics - Theory
dc.titleMulti-Instanton Effects in QCD Sum Rules for the Pion
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