Extended QCD

TL;DR

This paper presents an exact reformulation of QCD with additional bosonic fields, connecting it directly to various quark and baryon models, and analyzes it in the large-N limit.

Contribution

It introduces a reformulation of QCD that incorporates bosonic fields, establishing a direct link to quark models and the bag model, while remaining exactly equivalent to standard QCD.

Findings

Connects QCD with nonrelativistic and chiral quark models

Provides a large-N analysis of the reformulated theory

Shows the reformulation is exactly equivalent to QCD

Abstract

I consider a reformulation of QCD which incorporates additional bosonic fields, and analyze it in the large-N limit. This construction makes a more direct connection with the nonrelativistic quark and the chiral quark models, as well as the bag model for baryons. This extension of QCD is neither a model nor an effective low energy theory, but is exactly equivalent to QCD.