2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49813In this paper we will construct all BPS and non-BPS D-branes in Type IIA and Type IIB theories from tachyon condensation. We also propose form of Wess-Zumino term for non-BPS D-brane and we will show that tachyon condensation in this term leads to standard Wess-Zumino term for BPS D-brane.35 pages, corrected some typosHigh Energy Physics - Theorytext