The interplay between the <A^2> condensate and instantons

Details The interplay between the <A^2> condensate and instantons The interplay between the <A^2> condensate and instantons

2011-02-10

arxiv.org/abs/1102.2074v1

PoS(FacesQCD)038, 2011

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, talk presented by David Vercauteren at The Many Faces of QCD, November 1-5, 2010, Ghent, Belgium

Scientific paper

Using the Local Composite Operator formalism, we analytically study the dimension two gluon condensate in the presence of instantons. We first use the dilute gas approximation and partially solve the infrared problem of instanton physics. In order to find quantitative results, however, we turn to an instanton liquid model, where we find a two-component picture of the condensate: one component comes from instantons, a second component is non-perturbatively generated by quantum fluctuations around the instantons.

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