Cubic interactions for arbitrary spin N-extended massless supermultiplets in 4d flat space

TL;DR

This paper develops a light-cone gauge superfield framework for describing cubic interactions of N-extended massless supermultiplets with arbitrary spin in 4D flat space, providing a simplified superspace representation.

Contribution

It introduces a novel unconstrained light-cone gauge superfield formulation and superspace representation for cubic interaction vertices of N-extended massless supermultiplets.

Findings

Constructed a superspace representation for all cubic interaction vertices.

Developed a simple superspace form for the interaction vertices.

Realized relativistic symmetries of the N-extended Poincare superalgebra on interacting fields.

Abstract

N-extended massless arbitrary integer and half-integer spin supermultiplets in four dimensional flat space are studied in the framework of light-cone gauge formalism. For such multiplets, by using light-cone momentum superspace, we build unconstrained light-cone gauge superfield formulation. The superfield formulation is used to develop a superspace representation for all cubic interactions vertices of the N-extended massless supermultiplets. Our suitable treatment of the light-cone gauge superfields allows us to obtain attractively simple superspace representation for the cubic interaction vertices. Superspace realization of relativistic symmetries of the N-extended Poincare superalgebra on space of interacting fields is also obtained.