2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49871We review the recent results concerning the computation of cubic and quartic couplings of scalar fields in type IIB supergravity on AdS_5\times S^5 background that are dual to (extended) chiral primary operators in N=4 SYM_4. We discuss the vanishing of certain cubic and quartic couplings and non-renormalization property of corresponding correlators in the conformal field theory6 pages, Latex, JHEP style; based on the talk by G. Arutyunov at the TMR Meeting "Quantum Aspects of Gauge Theories, Supersymmetry and Unification" held in Paris, September 1999High Energy Physics - Theorytext