2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/179402We present an explicit evidence that shows the correspondence between the type IIB supergravity in the pp-wave background and its dual supersymmetric Yang-Mills theory at the interaction level. We first construct the cubic term of the light-cone interaction Hamiltonian for the dilaton-axion sector of the supergravity. Our result agrees with the corresponding part of the light-cone string field theory (SFT) and furthermore fixes its previously undetermined $p^+$-dependent normalization. Adopting thus fixed light-cone SFT, we compute the matrix elements of light-cone Hamiltonian involving three chiral primary states and find an agreement with a prediction from the dual Yang-Mills theory.20 pages, LaTeX; v2. an error and typos corrected, presentation improved, references added; v3. a footnote added, minor correctionsHigh Energy Physics - Theorytext