Vacuum expectation value of A^2 from LQCD

preprint2011arXivOpen access

O. Pène B. Blossier Ph. Boucaud A. le Yaouanc J. P. Leroy J. Micheli M. Brinet M. Gravina F. de Soto Z. Liu V. Morenas K. Petrov J. Rodríguez-Quintero

hep-lat

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We argue from LQCD that there is a non vanishing v.e.v of $A_a^μA^a_μ$ in QCD in the Landau gauge. We use operator product expansion to provide a clear definition of $A_a^μA^a_μ$ and extract a number both in the quenched and unquenched case.

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Vacuum expectation value of A^2 from LQCD

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