2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/200381An exotic approach to hadrons is discussed. It is based on the recently developed open-closed string duality explicitly conjectured as the AdS/CFT correspondence. Mesons as well as pentaquarks are studied in this approach. Spins are introduced as distribution functions over the string, and a second quantization method of string theory is examined and used to estimate the mass and decay width of various hadrons. This approach provides a way to understand the structure of flavor by a configuration of probe branes.8 pages, 5 figures, to appear in the proceedings for YKIS06High Energy Physics - Phenomenologytext