Nonlinear realizations and the partial breaking of extended supersymmetry

In this paper we use nonlinear realizations to examine the breaking of N = 2 extended supersymmetry to N = 1. We derive Lagrangians and transformations laws for the generalized N = 2 Akulov-Volkov Goldstone field. We analyze the ghost states and show that they may be collected into N = 1 supermultiplets. We extend the transformation laws for the N = 1 chiral and vector multiplets to N = 2. Finally, we give the N = 2 generalization of an arbitrary N = 1 supersymmetric Lagrangian. 23 references