Superparticle models with tensorial central charges
Superparticle models with tensorial central charges
A generalization of the Ferber-Shirafuji formulation of superparticle mechanics is considered. The generalized model describes the dynamics of a superparticle in a superspace extended by tensorial central charge coordinates and commuting twistorlike spinor variables. The $D=4$ model contains a continuous real parameter $a>~0$ and at $a=0$ reduces to the $SU(2,2|1)$ …