2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/175450The most obvious field-theoretic model for a brane is a scalar field domain wall or kink. I discuss how this idea can be connected with spontaneous internal symmetry breaking via a mechanism called the ``clash of symmetries''. Compatibility with Randall and Sundrum's warped metric alternative to compactification is then demonstrated. I end with brief remarks about open questions.4 pages. Invited talk at Susy06. To appear in the proceedingsHigh Energy Physics - Phenomenologytext