Massive Supermultiplets in Four-Dimensional Superstring Theory

TL;DR

This paper constructs universal supermultiplets for the lightest massive modes in four-dimensional superstring theory, providing explicit vertex operators and supersymmetry variations, and employs massive spinor helicity methods to analyze polarization states.

Contribution

It introduces a systematic construction of universal supermultiplets for massive string modes across various supersymmetry levels in four dimensions, including explicit vertex operators and supersymmetry transformations.

Findings

Universal supermultiplets are constructed for all N=1, 2, 4 supersymmetry cases.

Vertex operators and supersymmetry variations are explicitly derived.

Massive spinor helicity methods clarify polarization state interactions.

Abstract

We extend the discussion of arXiv:1007.5254 on massive Regge excitations on the first mass level of four-dimensional superstring theory. For the lightest massive modes of the open string sector, universal supermultiplets common to all four-dimensional compactifications with N = 1, 2 and N = 4 spacetime supersymmetry are constructed respectively -- both their vertex operators and their supersymmetry variations. Massive spinor helicity methods shed light on the interplay between individual polarization states.