Massive Two-Dimensional Quantum Chromodynamics

TL;DR

This paper investigates the zero-charge sector of massive 2D Quantum Chromodynamics, revealing that certain features of the massless theory persist, with implications for integrability and Hilbert space structure.

Contribution

It extends the understanding of 2D QCD by analyzing the massive case, highlighting the survival of massless features and discussing their implications.

Findings

Massless theory features survive in the massive case.

Constraints and BRST currents retain their character.

Implications for integrability and Hilbert space structure are discussed.

Abstract

In this work we study the zero-charge sector of massive two-dimensional Quantum Chromodynamics in the decoupled formulation. We find that some general features of the massless theory, concerning the constraints and the right- and left-moving character of the corresponding BRST currents, survive in the massive case. The implications for the integrability properties previously valid in the massless case, and the structure of the Hilbert space are discussed.