2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51408I review some recent progress in understanding the properties of AdS2 branes in AdS3. Different methods - classical string motion, Born-Infeld dynamics, boundary states - are evocated and compared.7 pages, to appear in the proceedings of the workshop "Across the present energy frontier : probing the origin of mass", Corfu, Greece, Sept. 2001High Energy Physics - Theorytext