Akulov-Volkov Lagrangian, symmetry currents, and spontaneously broken extended supersymmetry

A generalization of the Akulov-Volkov effective Lagrangian governing the self-interactions of the Nambu-Goldstone fermions associated with spontaneously broken extended supersymmetry as well as their coupling to matter is presented and scrutinized. The resulting currents associated with R symmetry, supersymmetry and space-time translations are constructed and seen to form a supermultiplet structure.