Massive Rigid String Model and its Supersymmetric Extension

TL;DR

This paper explores a rigid string model and its supersymmetric extension, analyzing constraints, physical states, and mass spectrum, and deriving supersymmetry transformations with kappa symmetry.

Contribution

It introduces a supersymmetric extension of the rigid string model, including the derivation of supersymmetry transformations and the analysis of physical states.

Findings

Solved constraints for massive states and determined the mass spectrum.

Developed the supersymmetric extension with kappa symmetry.

Derived supersymmetry transformations from on-shell transformations.

Abstract

We discuss a rigid string model proposed by Casalbuoni and Longhi. Constraints for the massive states are solved to find the physical states and the mass spectrum. We also find its supersymmetric extension with the kappa symmetry. The supersymmetry transformations are found starting from on-shell transformations using the Dirac bracket.