On codimension-one vacua and string theory

We investigate codimension-one vacua arising from low energy effective actions inspired by string theory, with an eye to their consistency when localized sources are allowed in the equations of motion. draw some inspiration Sugimoto's USp(32) model, simplest setting for brane supersymmetry breaking, and 0'B Dudas-Mourad solutions. Although that one can thus identify do not have a clear role this type investigation is naturally suggested singularities appear at endpoints internal intervals. also discuss introduction deformed D8-like solutions IIA, pointing out analogy non-supersymmetric models. Finally, we show appropriate choice frame simplify computations models tadpole potentials.