On a ${\mathbb{Z}}_2^n$-Graded Version of Supersymmetry

Abstract

We extend the notion of super-Minkowski space-time to include ${\mathbb{Z}}_2^n$-graded (Majorana) spinor coordinates. Our choice of the grading leads to spinor coordinates that are nilpotent but commute amongst themselves. The mathematical framework we employ is the recently developed category of ${\mathbb{Z}}_2^n$-manifolds understood as locally ringed spaces. The formalism we present resembles $\mathcal{N}$-extended superspace (in the presence of central charges), but with some subtle differences due to the exotic nature of the grading employed.

15 pages. Comments welcomed. Part of this work was reported on at the miniworkshop "Supergeometry and Applications", University of Luxembourg, December 14-15, 2017