2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/215599In this paper we constructed integrable defects in complex sine-Gordon theory. Soliton and particle interactions with the defect are analysed. Defects are used to dress Dirichlet boundaries to create a wider class of integrable boundary conditions to ones previously studied. Properties of these new boundaries including soliton and particle reflections with the boundaries are presented.33 pages, 16 figures, minor correctionsHigh Energy Physics - Theorytext