Bulk-brane supergravity

Abstract

We point out a limitation of the existing supergravity tensor calculus on the $S^1/Z_2$ orbifold that prevents its use for constructing general supersymmetric bulk-plus-brane actions. We report on the progress achieved in removing this limitation via the development of ``supersymmetry without boundary conditions.''

Submitted for the SUSY07 proceedings, 4 pages, LaTeX