2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/53324Two dimensional charged black hole solution is obtained by implementing an $O(2,2)$ transformation on the three dimensional black string solution. Two different monopole backgrounds in five dimensions are related through an $O(2,2)$ transformation. It has been shown in these examples that the particular $O(2,2)$ transformation corresponds to duality transformation.14 pagesHigh Energy Physics - Theorytext