Null Physical States in String Models

TL;DR

This paper investigates the structure of null physical states in the Ramond-Neveu-Schwarz string model, providing additional insights into the noghost theorem and the nature of null states in this framework.

Contribution

It offers new detailed analysis of null physical states in the Ramond-Neveu-Schwarz model, extending previous work on the noghost theorem.

Findings

Derived additional information about null physical states

Enhanced understanding of the noghost theorem in string models

Clarified the structure of null states in the Ramond sector

Abstract

This note is a brief addendum to my article Nucl. Phys. B 864 (2012) 285, [arXiv: 1110.5510], which discusses the noghost theorem in Ramond sectors of string models. In this addendum we derive additional information about the structure of null physical states in the Ramond-Neveu-Schwarz model.