Aspects of Spontaneous N=2 -> N=1 Breaking in Supergravity

Abstract

We discuss some issues related to spontaneous N=2-> N=1 supersymmetry breaking. In particular, we state a set of geometrical conditions which are necessary that such a breaking occurs. Furthermore, we discuss the low energy N=1 effective Lagrangian and show that it satisfies non-trivial consistency conditions which can also be viewed as conditions on the geometry of the scalar manifold.

11 pages, Latex. Talk given at the ``Workshop on special geometric structures in string theory'', Bonn, September 8-11, 2001