The Infrared Behaviour of the Pure Yang-Mills Green Functions
  We review the infrared properties of the pure Yang-Mills correlators and discuss recent results concerning the two classes of low-momentum solutions for them reported in literature; i.e. decoupling and scaling solutions. We will mainly focuss on the Landau gauge and pay special attention to the results inferred from the analysis of the Dyson-Schwinger equations of the theory and from "{\it quenched}" lattice QCD. The results obtained from properly interplaying both approaches are strongly emphasized. 
Ph. Boucaud, J. P. Leroy, A. Le Yaouanc, J. Micheli, O. P\'ene, J.   Rodr\'iguez-Quintero
hep-ph