Vacuum expectation value of A² from LQCD
Pène, O. · Blossier, B. · Boucaud, Ph. · Yaouanc, A. Le · Leroy, J. P. · Micheli, J. · Brinet, M. · Gravina, M. · De Soto, F. · Liu, Z. · Morenas, V. · Petrov, K. · Rodríguez-Quintero, J.
Original · EN
We argue from LQCD that there is a non vanishing v.e.v of AₐμAᵃμ in QCD in the Landau gauge. We use operator product expansion to provide a clear definition of AₐμAᵃμ and extract a number both in the quenched and unquenched case.
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