Physical States in the $W_3$ String

TL;DR

This paper reviews recent developments in the $W_3$ string theory, highlighting its unique physical spectrum that includes states with unconventional ghost structures, both for discrete and continuous momenta.

Contribution

It provides a comprehensive review of the physical spectrum and ghost structures in the $W_3$ string, emphasizing novel features and recent progress.

Findings

Physical spectrum includes states with non-standard ghost structures.

States with both discrete and continuous momenta are present.

Highlights recent theoretical developments in $W_3$ string theory.

Abstract

We present a review of some of the recent developments in the study of the $W_3$ string. One of the interesting features of the theory is that the physical spectrum includes states with non-standard ghost structure, such as excitations of the ghost fields, both for discrete-momentum and continuous-momentum states. (Contribution to the Proceedings of the 16'th Johns Hopkins Workshop on Current Problems in Particle Physics, Gothenburg, Sweden, June 1992)