2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49815In the derivation of the Born-Infeld action for the case with a nontrivial boundary of the string world sheet the appearance of a new term changes the conformal anomaly. This may have many consequences, especially also in the study of generalized interacting brane systems.9 pages, an important note is added at the end of the paperHigh Energy Physics - Theorytext