2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51865We realize the CFT with target a lens space SU(2)/Z_l as a simple current construction. This allows us to compute the boundary states and the annuli coefficients, and in particular to study the B-type branes, in purely algebraic terms. Several issues, like the appearance of fractional branes and symmetry breaking boundary conditions, can be addressed more directly in this approach than in a more geometric treatment.13 pagesHigh Energy Physics - Theorytext