2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/149408Using world-sheet parity we show that mixed D and N components of D-strings are dual to the anti-symmetric $B_{μν}$ field. The contribution of the latter is responsible for the reduction and even removal of all the interactions between two dissimilar D-branes.Tex, 8 pages, No figures, 20kb, a paragraph is addedHigh Energy Physics - Theorytext