; De Fazio, F.
; Nicotri, S.] Ist Nazl Fis Nucl, Sez Bari, Bari, Italy
; [Jugeau, F.] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
; [Jugeau, F.] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing, Peoples R China
; [Nicotri, S.] Univ Durham, IPPP, Dept Phys, Durham DH1 3HP, England
We investigate AdS/QCD duality for the two-point correlation function of the lowest dimension scalar glueball operator, in the case of the IR soft wall model. We point out the role of the boundary conditions for the bulk-to-boundary propagator in determining the gluon condensates. We show how a low energy QCD theorem can be obtained within the AdS approach, together with a gluon condensate close to the commonly accepted value and robust against perturbation of the background dilaton field.