Spinning particles as a nonlinear realization of the superworldline reparametrization invariance

The superdiffeomorphisms invariant description of N-extended spinning particle is constructed in the framework of the nonlinear realization approach. The action is universal for all values of N and describes the time evolution of (Formula presented) different group elements of the superdiffeomorphisms group of the (Formula presented) superspace. The form of this action coincides with the one-dimensional version of the gravity action, analogous to Trautman’s.